- This malware abuses certificates and has security software evasion that affects machines using Apple's OS X operating system. The fake certificates installed.
- Oct 24, 2019 Mac mini introduced in early 2009 or later iMac introduced in mid 2007 or later Mac Pro introduced in early 2008 or later Xserve models introduced in early 2009. To find your Mac model, memory, storage space, and macOS version, choose About This Mac from the Apple menu. If your Mac isn't compatible with OS X Yosemite, the installer will let.
- Installing Adobe Reader is a two-step process. First you download the installation package, and then you install Adobe Reader from that package file. If you're running Mac OS X 10.9 or later, install the latest version of Reader. For step-by-step instructions, see Install Adobe Acrobat Reader DC on.
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- Os X 10.9
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Avast Secure Browser 75.x; Apple macOS 10.15.x (Catalina) Apple macOS 10.10.x (Mojave) Apple macOS 10.13.x (High Sierra) Apple macOS 10.12.x (Sierra) Apple Mac OS X 10.11.x (El Capitan) Apple Mac OS X 10.10.x (Yosemite) Apple Mac OS X 10.9.x (Mavericks).
Check compatibility
You can upgrade to OS Yosemite on any of the following Mac models. Your Mac also needs at least 2GB of memory and 8GB of available storage space.
MacBook introduced in 2009 or later, plus MacBook (13-inch, Aluminum, Late 2008)
MacBook Air introduced in late 2008 or later
MacBook Pro introduced in mid 2007 or later
Mac mini introduced in early 2009 or later
iMac introduced in mid 2007 or later
Mac Pro introduced in early 2008 or later
Xserve models introduced in early 2009 Osx on pc.
MacBook Air introduced in late 2008 or later
MacBook Pro introduced in mid 2007 or later
Mac mini introduced in early 2009 or later
iMac introduced in mid 2007 or later
Mac Pro introduced in early 2008 or later
Xserve models introduced in early 2009 Osx on pc.
To find your Mac model, memory, storage space, and macOS version, choose About This Mac from the Apple menu . If your Mac isn't compatible with OS X Yosemite, the installer will let you know.
Make a backup
Before installing any upgrade, it’s a good idea to back up your Mac. Time Machine makes it simple, and other backup methods are also available. Learn how to back up your Mac.
Get connected
It takes time to download and install OS X, so make sure that you have a reliable Internet connection. If you're using a Mac notebook computer, plug it into AC power.
Download OS X Yosemite
Os X 10.9
For the strongest security and latest features, find out whether you can upgrade to macOS Catalina, the latest version of macOS. https://browntwisted103.weebly.com/blog/cisco-anyconnect-client-for-mac-os-x-yosemite.
If you still need OS X Yosemite, use this link: Download OS X Yosemite. A file named InstallMacOSX.dmg will download to your Mac.
Install the macOS installer
Double-click the downloaded file to open a window showing its contents. Then double-click the file within, named InstallMacOSX.pkg.
Follow the onscreen instructions, which will guide you through the steps necessary to install.
Begin installation
After installation of the installer is complete, open the Applications folder on your Mac, then double-click the file named Install OS X Yosemite.
Click Continue and follow the onscreen instructions. You might find it easiest to begin installation in the evening so that it can complete overnight, if needed.
Allow installation to complete
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Please allow installation to complete without putting your Mac to sleep or closing its lid. Your Mac might restart, show a progress bar, or show a blank screen several times as it installs both OS X and related updates to your Mac firmware.
Learn more
- OS X Yosemite won't install on top of a later version of macOS, but you can erase your disk first or install on another disk.
- You can use macOS Recovery to reinstall macOS.
Access this screen from: Status
When you open Avast Security, your Mac's protection status appears. The status This Mac is protected indicates that all shields and protection components are enabled, and Avast is actively protecting your Mac. If critical issues need your attention, Avast may display an alert status and prompt you to resolve any issues.
General
Avast Security actively scans your Mac for malware and other threats, and prompts you if an action is required. By default, Avast automatically updates virus definitions and notifies you if a program update is required.
If you change the default settings, ensure your Mac's security by keeping Avast up to date. Go to ☰ Menu ▸ Settings ▸ General, and click Update Now.
You can select from the following scan options:
- Smart Scan: scans the most vulnerable areas of your Mac for malware.
- Deep Scan: an in-depth scan of your system that checks your storage drives and memory for malware.
- Targeted Scan: scans specific files or folders you select when you initiate the scan.
- USB/DVD Scan: scans any removable storage devices that are currently connected to your Mac.
- Custom Scan: allows you to set scan parameters and a schedule for scanning your Mac regularly and automatically.
Features
The Core Shields screen allows you to manage real-time security shields:
- File Shield: the main layer of active protection in Avast Security. It scans programs and files on your Mac for malicious threats in real-time before allowing them to be opened, run, modified, or saved.
- Web Shield: an additional layer of active protection in Avast Security. It scans data that is transferred when you browse the internet in real-time to prevent malware, such as malicious scripts, from being downloaded and run on your Mac.
- Email Shield: an additional layer of active protection in Avast Security. It scans your incoming and outgoing email messages in real-time for malicious content such as viruses.
- Real Site: an additional layer of active protection in Avast Premium Security. It protects against DNS (Domain Name System) hijacking by blocking fake websites to ensure you get to the actual website you want to visit.
Virus Chest is an isolated space where you can safely store potentially dangerous files or send them to the Avast Threat Labs for analysis. Files in Virus Chest cannot run or access your system and data, so any malicious code contained within a file is unable to harm your Mac.
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Wi-Fi Inspector is an active protection component which continuously monitors your network and connected devices for threats. Wi-Fi Inspector is enabled by default.
Note: Some aspects of Wi-Fi Inspector are only available in Avast Premium Security.
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Ransomware Shield secures your personal photos, documents, and files from being modified, deleted, or encrypted by ransomware attacks. This feature automatically secures your Pictures and Documents folders and allows you to specify which other folders you want to protect from untrusted applications. Additionally, you can specify which applications are allowed to modify the files in your protected folders.
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Note: Ransomware Shield is a premium feature and is only available in Avast Premium Security.
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Settings and Troubleshooting
To access and manage Avast Security settings, go to ☰ Menu ▸ Settings. The following settings are available:
- General: manage program updates, show the Avast Security icon in your menu bar, or join our beta program.
- Subscription: view your current subscription information or activate a subscription for Avast Premium Security.
- Privacy: share threat information with Avast, and allow your usage data to be shared with 3rd parties for analytics purposes.
- Core Shields: manage settings and add exceptions for each of the Core Shields.
- Scans: manage settings and add exceptions for each of the predefined Scans.
- Wi-Fi Inspector: manage automatic scanning and alerts, scan all devices connected to your Wi-Fi, and view a record of visited networks.
- Ransomware Shield: specify apps that are allowed to change or delete files in your protected folders, and managed protected file types.
How do I connect Avast Security with an Avast Account?
Avast Account is a portal where you can manage all Avast subscriptions that are registered to your email address. These subscriptions can be for any Avast product across all of your devices.
To connect Avast Security with your Avast Account, follow these steps:
- Click ☰ Menu on the main screen of Avast Security, then select Log in to Avast account.
- Enter your account credentials (email and password). Alternatively, click Facebook or Google to use these credentials instead.
- Click Log In.
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If you do not have an Avast Account, you can create one by going to ☰ Menu ▸ Create Account. Read more..
If you see the status This Mac is not fully protected, try the following solutions:
![10.9 10.9](/uploads/1/3/3/9/133910849/775626414.png)
- Ensure all Core Shields are enabled. Read more..
- Ensure Avast Security is up to date: go to ☰ Menu ▸ Settings ▸ General, and click Update Now.
If you see the status You are in passive mode, you need to manually allow Avast Software extensions on your Mac. For detailed instructions, refer to the following article:
To uninstall Avast Security, follow these steps:
- Open Avast Security and ensure the window is active.
- Click Avast in the menu bar on the top-left of your screen, then select Uninstall Avast Security.
- Click Uninstall.
- If prompted, use your Touch ID or enter your Administrator password and click OK to grant permission for the uninstallation.
- Click Quit.
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Avast Security is removed from your Mac.