A recent incident highlighted unsuspecting users repeatedly redirected to suspicious domains and bombarded with “Click Allow to continue” prompts, all originating from Fastguard.pro. Such tactics exploit push-notification APIs to push unwanted content even after the browser is closed. Early intervention is critical to prevent data harvesting and further malware installs.
Threat Overview
Fastguard.pro is a browser hijacker categorized as adware/PUP (Potentially Unwanted Program). Rather than corrupting files like a traditional virus, it commandeers browser settings and leverages push notifications to generate ad revenue and harvest browsing data.
In-Depth Analysis
Infection Vector
Fastguard.pro typically infiltrates systems when users visit compromised or ad‐heavy websites that trigger deceptive pop‐ups urging them to “Allow notifications.” Once granted, the site gains permission to push ads at will, even after the original page is closed. Bundled installers for free software may also install a hidden PUP component that redirects traffic to Fastguard.pro’s domain.
Behavioral Profile
- Push Notification Abuse
- Triggers a browser prompt: “Click Allow to continue.”
- On consent, floods the desktop/browser with ads linking to affiliate scams or phishing sites.
- Browser Settings Hijack
- Alters default search engine and homepage to Fastguard.pro or related affiliate URLs.
- Injects scripts into every new tab for redirect loops.
- Data Collection & Tracking
- Monitors browsing patterns and search queries.
- Shares data with third-party ad networks for targeted advertising.
Risk Assessment
Although not a file‐corrupting virus, Fastguard.pro’s persistence and constant ad assaults pose significant privacy and security risks. Redirects can lead to more dangerous malware, and acceptance of push notifications may debilitate browser performance. Real‐world examples show users inadvertently installing credential‐stealing Trojans after following malicious push links.
Example Push Prompt
Fastguard.pro wants to show notifications
[Allow] [Block]
Manual Adware Removal (Windows & Mac)
Step 1: Identify Suspicious Applications
For Windows Users
- Press
Ctrl + Shift + Esc
to open the Task Manager.
- Check the “Processes” tab for unfamiliar or suspicious programs consuming excessive CPU or memory.
- If you find any, note their names and close them.
- Open
Control Panel
> Programs
> Programs and Features
.
- Locate the suspicious application, right-click it, and select “Uninstall.”
For Mac Users
- Open
Finder
and navigate to Applications
.
- Look for any suspicious or unknown applications.
- Drag them to the
Trash
, then right-click on the Trash
and select Empty Trash
.
- Open
System Preferences
> Users & Groups
> Login Items
and remove any unrecognized startup programs.
Step 2: Remove Adware-Related Browser Extensions
Google Chrome
- Open Chrome and go to
Menu
(three dots in the top-right corner) > Extensions
.
- Locate suspicious extensions and click “Remove.”
- Reset Chrome: Go to
Settings
> Reset settings
> “Restore settings to their original defaults.”
Mozilla Firefox
- Open Firefox and go to
Menu
(three lines in the top-right corner) > Add-ons and themes
.
- Locate and remove suspicious extensions.
- Reset Firefox: Go to
Help
> More troubleshooting information
> “Refresh Firefox.”
Safari (Mac)
- Open Safari and go to
Preferences
> Extensions
.
- Locate and remove any unknown extensions.
- Reset Safari: Go to
History
> “Clear History.”
Microsoft Edge
- Open Edge and go to
Menu
(three dots in the top-right corner) > Extensions
.
- Remove suspicious extensions.
- Reset Edge: Go to
Settings
> Reset settings
> “Restore settings to their default values.”
Step 3: Delete Adware-Related Files and Folders
For Windows Users
- Press
Win + R
, type %AppData%
, and press Enter.
- Look for suspicious folders and delete them.
- Repeat for
%LocalAppData%
, %ProgramData%
, and %Temp%
.
For Mac Users
- Open Finder, press
Shift + Command + G
, and enter ~/Library/Application Support/
.
- Locate and delete suspicious folders.
- Repeat for
~/Library/LaunchAgents/
, ~/Library/LaunchDaemons/
, and ~/Library/Preferences/
.
Step 4: Flush DNS Cache (Recommended)
For Windows Users
- Open
Command Prompt
as Administrator.
- Type
ipconfig /flushdns
and press Enter.
For Mac Users
- Open
Terminal
.
- Type
sudo killall -HUP mDNSResponder
and press Enter.
Step 5: Restart Your Computer
Restart your device to complete the manual removal process.
Automatic Adware Removal Using SpyHunter (Windows & Mac)
For a hassle-free and effective removal, use SpyHunter, a robust anti-malware tool designed to detect and remove adware efficiently.
Step 1: Download SpyHunter
Download SpyHunter from the official website: Click here to download SpyHunter.
Step 2: Install SpyHunter
Follow the installation instructions based on your operating system:
For Windows Users:
- Open the downloaded
.exe
file.
- Follow the on-screen installation instructions.
- Launch SpyHunter and allow it to update its malware definitions.
For Mac Users:
- Open the downloaded
.dmg
file.
- Drag and drop SpyHunter into the Applications folder.
- Launch SpyHunter and allow it to update its malware definitions.
Step 3: Perform a System Scan
- Open SpyHunter.
- Click on
Start Scan
.
- Wait for the scan to complete.
- Review the detected threats and click
Fix Threats
to remove adware.
Step 4: Restart Your Device
After SpyHunter removes the threats, restart your computer to finalize the process.
For the most secure and effective removal, we recommend downloading and using SpyHunter: Download SpyHunter Here.
Stay safe and keep your system clean!
Conclusion
Rapid detection and removal of Fastguard.pro are essential to safeguard privacy and maintain browser integrity. Denying notification prompts, running a full system scan with reputable anti‐malware software, and manually cleaning browser settings will restore normal operation and block future hijacks.