- Published
- Source
- Help Net Security
- Filed under
- Data breaches, Attacks
GuardOS is an iPhone application that combines device security checks, VPN access, Safari content filtering, QR link scanning, and storage cleanup. It is available through the App Store. Getting started The home dashboard organizes tools into individual tiles, making each function accessible without navigating through multiple menus. During my walkthrough, it flagged one issue: Web Protection was turned off. Protection Check runs through web protection, passcode, biometrics, and software update status. A progress indicator shows … More →…
Think your details were in it?
- Check your email address at Have I Been Pwned – it lists the breaches your details have appeared in.
- Change that service's password, and any other account that used the same one. A password manager makes every password unique.
- Turn on two-step verification, and expect scam messages that quote the leaked details to sound convincing.
More helpHave I Been Pwned (opens in a new tab)NCSC: top tips for staying secure online (opens in a new tab)
Defender’s notebook
The attacker technique behind this story, in MITRE’s terms – and what to check in your own estate.
Active Scanning
ReconnaissanceWhat a defender checks
- Expect exploitation to follow mass scanning of a product you run.
- Close ports and services you don't need on the internet.
- Feed scanner addresses from threat intelligence into your alerting.
Build the skillBlue Team Analyst · Network & Firewall Monitoring
© 2026 The MITRE Corporation. This work is reproduced and distributed with the permission of The MITRE Corporation. MITRE ATT&CK and ATT&CK are registered trademarks of The MITRE Corporation.
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