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For the protection of our customers, Apple does not disclose, discuss, or confirm security issues until a full investigation has occurred and any necessary patches or releases are available. To learn more about Apple Product Security, see the Apple Product Security website.

Answer: Magic Mouse 2 is the currently available rechargeable mouse from Apple. It won’t work unless you have Bluetooth & turn it on in System Preferences. Or, if your computer lacks bluetooth, you could buy & install an external USB dongle from a non-Apple vendor. 7/10 (266 votes) - Download macOS El Capitan Mac Free. The twelfth version of Mac OS X appeared in 2015. MacOS El Capitan is the successor to Yosemite with improvements to its functions and graphical performance. MacOS is the current name of the former OS X, previously known as Mac OS X.

For information about the Apple Product Security PGP Key, see How to use the Apple Product Security PGP Key.

Where possible, CVE IDs are used to reference the vulnerabilities for further information.

To learn about other security updates, see Apple security updates.

Yosemite 10.11 Download Free

OS X El Capitan 10.11.1, Security Update 2015-004 Yosemite, and Security Update 2015-007 Mavericks

  • Accelerate Framework

    Available for: OS X Mavericks v10.9.5, OS X Yosemite v10.10.5, and OS X El Capitan 10.11

    Impact: Visiting a maliciously crafted website may lead to arbitrary code execution

    Description: A memory corruption issue existed in the Accelerate Framework in multi-threading mode. This issue was addressed through improved accessor element validation and improved object locking.

    CVE-ID

    CVE-2015-5940 : Apple

  • apache_mod_php

    Available for: OS X Mavericks v10.9.5, OS X Yosemite v10.10.5, and OS X El Capitan 10.11

    Impact: Multiple vulnerabilities in PHP

    Description: Multiple vulnerabilities existed in PHP versions prior to 5.5.29 and 5.4.45. These were addressed by updating PHP to versions 5.5.29 and 5.4.45.

    CVE-ID

    CVE-2015-0235

    CVE-2015-0273

    CVE-2015-6834

    CVE-2015-6835

    CVE-2015-6836

    CVE-2015-6837

    CVE-2015-6838

  • ATS

    Available for: OS X Mavericks v10.9.5, OS X Yosemite v10.10.5, and OS X El Capitan 10.11

    Impact: Visiting a maliciously crafted webpage may lead to an unexpected application termination or arbitrary code execution

    Description: A memory corruption issue existed in ATS. This issue was addressed through improved memory handling.

    CVE-ID

    CVE-2015-6985 : John Villamil (@day6reak), Yahoo Pentest Team

  • Audio

    Available for: OS X El Capitan 10.11

    Impact: A malicious application may be able to execute arbitrary code

    Description: An uninitialized memory issue existed in coreaudiod. This issue was addressed through improved memory initialization.

    CVE-ID

    CVE-2015-7003 : Mark Brand of Google Project Zero

  • Audio

    Available for: OS X Mavericks v10.9.5, OS X Yosemite v10.10.5, and OS X El Capitan 10.11

    Impact: Playing a malicious audio file may lead to arbitrary code execution

    Description: Multiple memory corruption issues existed in the handling of audio files. These issues were addressed through improved memory handling.

    CVE-ID

    CVE-2015-5933 : Apple

    CVE-2015-5934 : Apple

  • Bom

    Available for: OS X El Capitan 10.11

    Impact: Unpacking a maliciously crafted archive may lead to arbitrary code execution

    Description: A file traversal vulnerability existed in the handling of CPIO archives. This issue was addressed through improved validation of metadata.

    CVE-ID

    CVE-2015-7006 : Mark Dowd of Azimuth Security

  • CFNetwork

    Available for: OS X El Capitan 10.11

    Impact: Visiting a maliciously crafted website may lead to cookies being overwritten

    Description: A parsing issue existed when handling cookies with different letter casing. This issue was addressed through improved parsing.

    CVE-ID

    CVE-2015-7023 : Marvin Scholz and Michael Lutonsky; Xiaofeng Zheng and Jinjin Liang of Tsinghua University, Jian Jiang of University of California, Berkeley, Haixin Duan of Tsinghua University and International Computer Science Institute, Shuo Chen of Microsoft Research Redmond, Tao Wan of Huawei Canada, Nicholas Weaver of International Computer Science Institute and University of California, Berkeley, coordinated via CERT/CC

  • configd

    Available for: OS X El Capitan 10.11

    Impact: A malicious application may be able to elevate privileges

    Description: A heap based buffer overflow issue existed in the DNS client library. A malicious application with the ability to spoof responses from the local configd service may have been able to cause arbitrary code execution in DNS clients.

    CVE-ID

    CVE-2015-7015 : PanguTeam

  • CoreGraphics

    Available for: OS X Mavericks v10.9.5, OS X Yosemite v10.10.5, and OS X El Capitan 10.11

    Impact: Visiting a maliciously crafted website may lead to arbitrary code execution

    Description: Multiple memory corruption issues existed in CoreGraphics. These issues were addressed through improved memory handling.

    CVE-ID

    CVE-2015-5925 : Apple

    CVE-2015-5926 : Apple

  • CoreText

    Available for: OS X Mavericks v10.9.5, OS X Yosemite v10.10.5, and OS X El Capitan 10.11

    Impact: Processing a maliciously crafted font file may lead to arbitrary code execution

    Description: Multiple memory corruption issues existed in the handling of font files. These issues were addressed through improved bounds checking.

    CVE-ID

    CVE-2015-6992 : John Villamil (@day6reak), Yahoo Pentest Team

  • CoreText

    Available for: OS X Yosemite v10.10.5 and OS X El Capitan 10.11

    Impact: Processing a maliciously crafted font file may lead to arbitrary code execution

    Description: Multiple memory corruption issues existed in the handling of font files. These issues were addressed through improved bounds checking.

    CVE-ID

    CVE-2015-6975 : John Villamil (@day6reak), Yahoo Pentest Team

  • CoreText

    Available for: OS X El Capitan 10.11

    Impact: Processing a maliciously crafted font file may lead to arbitrary code execution

    Description: Multiple memory corruption issues existed in the handling of font files. These issues were addressed through improved bounds checking.

    CVE-ID

    CVE-2015-7017 : John Villamil (@day6reak), Yahoo Pentest Team

  • CoreText

    Available for: OS X Mavericks v10.9.5 and OS X Yosemite v10.10.5

    Impact: Processing a maliciously crafted font file may lead to arbitrary code execution

    Description: Multiple memory corruption issues existed in the handling of font files. These issues were addressed through improved bounds checking.

    CVE-ID

    CVE-2015-5944 : John Villamil (@day6reak), Yahoo Pentest Team

  • Directory Utility

    Available for: OS X Mavericks v10.9.5, OS X Yosemite v10.10.5, and OS X El Capitan 10.11

    Impact: A local user may be able to execute arbitrary code with root privileges

    Description: An authentication issue existed during the establishment of new sessions. This issue was addressed through improved authorization checks.

    CVE-ID

    CVE-2015-6980 : Michael of Westside Community Schools

  • Disk Images

    Available for: OS X El Capitan 10.11

    Impact: A malicious application may be able to execute arbitrary code with system privileges

    Description: A memory corruption issue existed in the parsing of disk images. This issue was addressed through improved memory handling.

    CVE-ID

    CVE-2015-6995 : Ian Beer of Google Project Zero

  • EFI

    Available for: OS X Mavericks v10.9.5, OS X Yosemite v10.10.5, and OS X El Capitan 10.11

    Impact: An attacker can exercise unused EFI functions

    Description: An issue existed with EFI argument handling. This was addressed by removing the affected functions.

    CVE-ID

    CVE-2014-4860 : Corey Kallenberg, Xeno Kovah, John Butterworth, and Sam Cornwell of The MITRE Corporation, coordinated via CERT

    Entry updated June 30, 2017

  • File Bookmark

    Available for: OS X El Capitan 10.11

    Impact: Browsing to a folder with malformed bookmarks may cause unexpected application termination

    Description: An input validation issue existed in parsing bookmark metadata. This issue was addressed through improved validation checks.

    CVE-ID

    CVE-2015-6987 : Luca Todesco (@qwertyoruiop)

  • FontParser

    Available for: OS X Mavericks v10.9.5, OS X Yosemite v10.10.5, and OS X El Capitan 10.11

    Impact: Processing a maliciously crafted font file may lead to arbitrary code execution

    Description: Multiple memory corruption issues existed in the handling of font files. These issues were addressed through improved bounds checking.

    CVE-ID

    CVE-2015-5927 : Apple

    CVE-2015-5942

    CVE-2015-6976 : John Villamil (@day6reak), Yahoo Pentest Team

    CVE-2015-6977 : John Villamil (@day6reak), Yahoo Pentest Team

    CVE-2015-6978 : Jaanus Kp, Clarified Security, working with HP's Zero Day Initiative

    CVE-2015-6991 : John Villamil (@day6reak), Yahoo Pentest Team

    CVE-2015-6993 : John Villamil (@day6reak), Yahoo Pentest Team

    CVE-2015-7009 : John Villamil (@day6reak), Yahoo Pentest Team

    CVE-2015-7010 : John Villamil (@day6reak), Yahoo Pentest Team

    CVE-2015-7018 : John Villamil (@day6reak), Yahoo Pentest Team

  • FontParser

    Available for: OS X El Capitan 10.11

    Impact: Processing a maliciously crafted font file may lead to arbitrary code execution

    Description: Multiple memory corruption issues existed in the handling of font files. These issues were addressed through improved bounds checking.

    CVE-ID

    CVE-2015-6990 : John Villamil (@day6reak), Yahoo Pentest Team

    CVE-2015-7008 : John Villamil (@day6reak), Yahoo Pentest Team

  • Grand Central Dispatch

    Available for: OS X Yosemite v10.10.5 and OS X El Capitan 10.11

    Impact: Processing a maliciously crafted package may lead to arbitrary code execution

    Description: A memory corruption issue existed in the handling of dispatch calls. This issue was addressed through improved memory handling.

    CVE-ID

    CVE-2015-6989 : Apple

  • Graphics Drivers

    Available for: OS X El Capitan 10.11

    Impact: A local user may be able to cause unexpected system termination or read kernel memory

    Description: Multiple out of bounds read issues existed in the NVIDIA graphics driver. These issues were addressed through improved bounds checking.

    CVE-ID

    CVE-2015-7019 : Ian Beer of Google Project Zero

    CVE-2015-7020 : Moony Li of Trend Micro

  • Graphics Drivers

    Available for: OS X El Capitan 10.11

    Impact: A local user may be able to execute arbitrary code with kernel privileges

    Description: A memory corruption issue existed in the kernel. This issue was addressed through improved memory handling.

    CVE-ID

    CVE-2015-7021 : Moony Li of Trend Micro

  • ImageIO

    Available for: OS X Mavericks v10.9.5 and OS X Yosemite v10.10.5

    Impact: Processing a maliciously crafted image file may lead to arbitrary code execution

    Description: Multiple memory corruption issues existed in the parsing of image metadata. These issues were addressed through improved metadata validation.

    CVE-ID

    CVE-2015-5935 : Apple

    CVE-2015-5938 : Apple

  • ImageIO

    Available for: OS X Mavericks v10.9.5, OS X Yosemite v10.10.5, and OS X El Capitan 10.11

    Impact: Processing a maliciously crafted image file may lead to arbitrary code execution

    Description: Multiple memory corruption issues existed in the parsing of image metadata. These issues were addressed through improved metadata validation.

    CVE-ID

    CVE-2015-5936 : Apple

    CVE-2015-5937 : Apple

    CVE-2015-5939 : Apple

  • IOAcceleratorFamily

    Available for: OS X Mavericks v10.9.5, OS X Yosemite v10.10.5, and OS X El Capitan 10.11

    Impact: A malicious application may be able to execute arbitrary code with system privileges

    Description: A memory corruption issue existed in IOAcceleratorFamily. This issue was addressed through improved memory handling.

    CVE-ID

    CVE-2015-6996 : Ian Beer of Google Project Zero

  • IOHIDFamily

    Available for: OS X El Capitan 10.11

    Impact: A malicious application may be able to execute arbitrary code with kernel privileges

    Description: A memory corruption issue existed in the kernel. This issue was addressed through improved memory handling.

    CVE-ID

    CVE-2015-6974 : Luca Todesco (@qwertyoruiop)

  • Kernel

    Available for: OS X Yosemite v10.10.5

    Impact: A local user may be able to execute arbitrary code with system privileges

    Description: A type confusion issue existed in the validation of Mach tasks. This issue was addressed through improved Mach task validation.

    CVE-ID

    CVE-2015-5932 : Luca Todesco (@qwertyoruiop), Filippo Bigarella

  • Kernel

    Available for: OS X El Capitan 10.11

    Impact: An attacker with a privileged network position may be able to execute arbitrary code

    Description: An uninitialized memory issue existed in the kernel. This issue was addressed through improved memory initialization.

    CVE-ID

    CVE-2015-6988 : The Brainy Code Scanner (m00nbsd)

  • Kernel

    Available for: OS X El Capitan 10.11

    Impact: A local application may be able to cause a denial of service

    Description: An issue existed when reusing virtual memory. This issue was addressed through improved validation.

    CVE-ID

    CVE-2015-6994 : Mark Mentovai of Google Inc.

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  • libarchive

    Available for: OS X Mavericks v10.9.5, OS X Yosemite v10.10.5, and OS X El Capitan 10.11

    Impact: A malicious application may be able to overwrite arbitrary files

    Description: An issue existed within the path validation logic for symlinks. This issue was addressed through improved path sanitization.

    CVE-ID

    CVE-2015-6984 : Christopher Crone of Infinit, Jonathan Schleifer

  • MCX Application Restrictions

    Available for: OS X Yosemite v10.10.5 and OS X El Capitan 10.11

    Impact: A developer-signed executable may acquire restricted entitlements

    Description: An entitlement validation issue existed in Managed Configuration. A developer-signed app could bypass restrictions on use of restricted entitlements and elevate privileges. This issue was addressed through improved provisioning profile validation.

    CVE-ID

    CVE-2015-7016 : Apple

  • mDNSResponder

    Available for: OS X Mavericks v10.9.5, OS X Yosemite v10.10.5, and OS X El Capitan v10.11

    Impact: A remote attacker may be able to cause unexpected application termination or arbitrary code execution

    Description: Multiple memory corruption issues existed in DNS data parsing. These issues were addressed through improved bounds checking.

    CVE-ID

    CVE-2015-7987 : Alexandre Helie

  • mDNSResponder

    Available for: OS X El Capitan v10.11

    Impact: A local application may be able to cause a denial of service

    Description: A null pointer dereference issue was addressed through improved memory handling.

    CVE-ID

    CVE-2015-7988 : Alexandre Helie

  • Net-SNMP

    Available for: OS X El Capitan 10.11

    Impact: An attacker in a privileged network position may be able to cause a denial of service

    Description: Multiple issues existed in netsnmp version 5.6. These issues were addressed by using patches affecting OS X from upstream.

    CVE-ID

    CVE-2012-6151

    CVE-2014-3565

  • OpenGL

    Available for: OS X Mavericks v10.9.5, OS X Yosemite v10.10.5, and OS X El Capitan 10.11

    Impact: Visiting a maliciously crafted website may lead to arbitrary code execution

    Description: A memory corruption issue existed in OpenGL. This issue was addressed through improved memory handling.

    CVE-ID

    CVE-2015-5924 : Apple

  • OpenSSH

    Available for: OS X El Capitan 10.11

    Impact: A local user may be able to conduct impersonation attacks

    Description: A privilege separation issue existed in PAM support. This issue was addressed with improved authorization checks.

    CVE-ID

    CVE-2015-6563 : Moritz Jodeit of Blue Frost Security GmbH

  • Sandbox

    Available for: OS X El Capitan 10.11

    Impact: A local user may be able to execute arbitrary code with kernel privileges

    Description: An input validation issue existed when handling NVRAM parameters. This issue was addressed through improved validation.

    CVE-ID

    CVE-2015-5945 : Rich Trouton (@rtrouton), Howard Hughes Medical Institute, Apple

  • Script Editor

    Available for: OS X El Capitan 10.11

    Impact: An attacker may trick a user into running arbitrary AppleScript

    Description: In some circumstances, Script Editor did not ask for user confirmation before executing AppleScripts. This issue was addressed by prompting for user confirmation before executing AppleScripts.

    CVE-ID

    CVE-2015-7007 : Joe Vennix

  • Security

    Available for: OS X Mavericks v10.9.5, OS X Yosemite v10.10.5, and OS X El Capitan 10.11

    Impact: An Apple-signed binary could be used to load arbitrary files

    Description: Certain Apple-signed executables loaded applications from relative locations. This was addressed through additional checks in Gatekeeper.

    CVE-ID

    CVE-2015-7024 : Patrick Wardle of Synack

  • Security

    Available for: OS X El Capitan 10.11

    Impact: Processing a maliciously crafted certificate may lead to arbitrary code execution

    Description: Multiple memory corruption issues existed in the ASN.1 decoder. These issues were addressed through improved input validation.

    CVE-ID

    CVE-2015-7059 : David Keeler of Mozilla

    CVE-2015-7060 : Tyson Smith of Mozilla

    CVE-2015-7061 : Ryan Sleevi of Google

  • Security

    Available for: OS X El Capitan 10.11

    Impact: A malicious application may be able to overwrite arbitrary files

    Description: A double free issue existed in the handling of AtomicBufferedFile descriptors. This issue was addressed through improved validation of AtomicBufferedFile descriptors.

    CVE-ID

    CVE-2015-6983 : David Benjamin, Greg Kerr, Mark Mentovai and Sergey Ulanov from the Chrome Team

  • SecurityAgent

    Available for: OS X El Capitan 10.11

    Impact: A malicious application can programmatically control keychain access prompts

    Description: A method existed for applications to create synthetic clicks on keychain prompts. This was addressed by disabling synthetic clicks for keychain access windows.

    CVE-ID

    CVE-2015-5943

OS X El Capitan v10.11.1 includes the security content of Safari 9.0.1.

Security Update 2015-004 and 2015-007 is recommended for all users and improves the security of OS X.

'Can I still upgrade to El Capitan though the official update is outdated?' 'How do I upgrade to El Capitan? I'm using Yosemite, is there a way that can upgrade Yosemite to El Capitan?'

On this page, we collected the complete process of how to upgrade to Mac OX S El Capitain 10.11.6 without losing any data. Follow this guide, you can download and install Mac OS X 10.11.6 on your computer with ease:

PAGE CONTENT:
Check If Your Mac Is Available for El Capitan Update
Prepare Mac Ready Before El Capitan Update
Update Mac OS X to El Capitan (Download OS X 10.11.6)
Bonus Tip: Restore lost data after El Capitan update (without backups)

Tips on this page also work to upgrade macOS Mojave, High Sierra to the latest macOS Big Sur. You may also interest in: update and install macOS.

What Is Mac OS X El Capitan

El Capitan, the last edition known as Mac OS X 10.11.6, is an operating system between Yosemite and macOS Sierra, released on July 18, 2015.

Here is a list of new features that Mac OS X 10.11.6 brings to most old Mac OS X users. And you may feel like downloading and installing the system on your Macs:

  • Support multitask
  • Better performance
  • Better user experience
  • Free download

So how to download or upgrade your Mac computer to El Capitan? Follow through the guides, any one of Mac users can make it.

1. Check If Your Mac Is Available for El Capitan Update

Before you take steps to update your present Mac OS X to El Capitan 10.11.6/10.11.2, check whether your Mac computer is available to download and install the new El Capitan. Check the below list and see whether your device or OS X can get the new update:

Supported Mac devices:

  • iMac (Mid 2007 or newer)
  • MacBook (Late 2008 Aluminum, Early 2009, or newer)
  • MacBook Pro (Mid 2007 or newer)
  • MacBook Air (Late 2008 or newer)
  • Mac mini (Early 2009 or newer)
  • Mac Pro (Early 2008 or newer)
  • Xserve (Early 2009)

Available OS X for El Capitan:

  • OS X Yosemite v10.10
  • OS X Mavericks v10.9
  • OS X Mountain Lion v10.8
  • OS X Lion v10.7
  • Mac OS X Snow Leopard v10.6.8

If your Mac OS X and devices are just right on the list, read on and follow tips to prepare your Mac OS ready for El Capitan update.

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2. Prepare Mac Ready Before El Capitan Update

Let's see what you should do to prepare your Mac devices fully ready for the new El Capitan 10.11.6, etc. update. And if this is your first time updating Mac OS X, follow the tips below carefully:

#1. Hardware Requirement

  • Leave at least 2GB memory and 8.8 GB of storage space on Mac
  • Leave at least 45% battery on Mac
  • Connect Mac to the internet or WiFi
  • Update your Mac Apps to the latest versions

#2. Back Up All Important Mac Data (to An External Disk)

It's vitally important to back up important data on Mac to external storage devices, which will certainly help to avoid data loss issues due to Mac OS X update.

To do so, you have two options:

  • Option 1. Back up all your data via Time Machine
  1. 1. Connect an external hard drive to Mac.
  2. 2. Click the Apple menu icon, click 'System Preference', and click 'Time machine'.
  3. 3. Click 'Select Backup Disk...' and choose the external drive as a backup disk.
  • Option 2. Fully back up your Mac data via reliable Mac backup software

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For a step-by-step guide, please follow: How to Back Up Mac without Time Machine for help.

If you have forgotten to backup data, reliable Mac data recovery software like EaseUS Data Recovery Wizard is the best tool to help you restore lost data.

So now, you can follow the next tutorial tips to update your present Mac OS X into El Capitan.

3. Update Mac OS X to El Capitan (Download OS X 10.11.6)

You can update your Mac OS X to El Capitan now. Follow the below guide to update to El Capitan with ease:

#1. Download and Install Mac OS X from Mac App Store

Step 1. Go to Mac App Store and search El Capitan.

Step 2. Click the Download button for El Capitan.

Step 3. Click Continue and follow the instructions to install El Capitan on your Mac.

#2. Manually Download El Capitan 10.11.6 from Apple

Here you can also download El Capitan or other new versions of macOS from the Apple support page, and install on your Mac:

When the downloading process is finished, the El Capitan installer will launch automatically. All you just need to follow the onscreen guide to install the Mac OS X 10.11.6 on your Mac computer.

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Note that the El Capitan upgrade process will not take long. Just wait patiently to let the El Capitan installation process accomplish on your Mac.

You May Also Interest In:

Don't worry if you meet some problems during the Mac OS X or macOS update process. Click the below troubleshooting guide and follow to resolve the respective issue on your own.

When you encounter macOS update stuck, macOS or Mac OS X update failed, stay calm. Follow this guide to install the desired macOS or Mac OS X on your Mac.

Bonus Tip: Restore Lost Data after Upgrading Mac to El Capitan 10.11.6

If you didn't create backups before the Mac OS X El Capitan update, and you lost some important Mac files after the update process, your last chance is to turn to reliable Mac data recovery software for help.

Here, EaseUS Data Recovery Wizard for Mac is available for you to download and restore all lost files after macOS or Mac OS X update.

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This software is fully compatible with all Mac OS X such as El Capitan, Yosemite, Mavericks, and the latest new macOS Mojave, High Sierra, etc.

Download it and follows to restore lost data due to the El Capitan update now:

Step 1. Where was data lost after operating system update? Choose the location and click Scan.

Step 2. EaseUS Data Recovery Wizard for Mac will immediately scan your selected disk volume and display the scanning results on the left pane.

Step 3. After the scan, select the target files that were unknowingly lost during or after the update and click Recover button to get them all back.

What Else Can EaseUS Data Recovery Wizard Do for You？

Besides macOS update file recovery, EaseUS Data Recovery Wizard dedicates to restoring lost data for Mac users under complex circumstances, such as:

  • Data deletion
  • Mac hard drives formatting
  • Storage device corruption
  • Mac system crash
  • Mac OS X reinstallation

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El Capitan Still Works on Old Macs, Go and Get It Now

Don't worry if your Mac computer is not available for updating to Mac OS X El Capitan. Follow this page, you'll see if your computer can install this operating system.

If yes, follow to download and install this excellent system and renew your Mac computer now. Don't worry if you lost some files during the process, EaseUS Data Recovery Wizard for Mac can bring your files back.

Now, it's your turn. Go and get it now.