Modern malware is very sophisticated and has many tricks so it will appear as something other than what it is. And it does all of this with the knowledge that things may not be as they appear. It can only check its files for the patterns of known malware and monitor its activity. Windows Defender doesn't have the big picture understanding of the program that you do. If there was such a facility it would give malware another potential method to evade detection. The programmers do not trust their ability to do this with sufficient reliability. Windows Defender doesn't try to determine if you wrote the program and thus grant it special privileges. Sometimes malicious software is not detected and sometimes legitimate software is misidentified as malicious. The detection of malicious software is difficult and the process is not 100% reliable. Why did this start to happen now? Likely there was a recent update to Windows Defender that caused it to change its behavior to your program. I would imagine that's something most programs do, copying and reading files. Why now? Why Bearfoos? Why can't Windows Defender detect that I wrote that program myself? Why can't Windows Defender realize it's just copying files around my own local drives? I even added it myself to Windows Task Scheduler, how much more of a green flag does Windows Defender needs!? I'm sure I can add it to exceptions, there is another thread about Avast about a very similar thing that suggested it. It is also Pinvoking kernel32 (GetConsoleWindow) and user32.dll (ShowWindow) since it is a console app. exe reads its config file, overwrites it if a problem occurs, then uses the loaded info to start recursive searches and then copies/compress (using 7za.exe) those files into multiple drives. It uses two DLLs I've written myself, one of them does recursive searches and the other one read/writes files. This morning when it tried to do what it always does, Windows Defender quarantined it, calling it a severe threat "Trojan:Win32/Bearfoos.A!ml" It had never been detected as a threat before. See Protecting app access to user data for ways that macOS can help protect user data from malware, and Operating system integrity for ways macOS can limit the actions malware can take on the system.I made this backup program more than a year ago. There are additional protections, particularly on a Mac with Apple silicon, to limit the potential damage of malware that does manage to execute. These protections, further described below, combine to support best-practice protection from viruses and malware. XProtect adds to this defense, along with Gatekeeper and Notarization.įinally, XProtect acts to remediate malware that has managed to successfully execute. The next layer of defense is to help ensure that if malware appears on any Mac, it’s quickly identified and blocked, both to halt spread and to remediate the Mac systems it’s already gained a foothold on. The first layer of defense is designed to inhibit the distribution of malware, and prevent it from launching even once-this is the goal of the App Store, and Gatekeeper combined with Notarization. Remediate malware that has executed: XProtect Block malware from running on customer systems: Gatekeeper, Notarization, and XProtectģ. Prevent launch or execution of malware: App Store, or Gatekeeper combined with NotarizationĢ. Malware defenses are structured in three layers:ġ. iPhone Text Message Forwarding security.How iMessage sends and receives messages.Adding transit and eMoney cards to Apple Wallet.Rendering cards unusable with Apple Pay.Adding credit or debit cards to Apple Pay.How Apple Pay keeps users’ purchases protected.Intro to app security for iOS and iPadOS.Protecting access to user’s health data.How Apple protects users’ personal data.Activating data connections securely in iOS and iPadOS.Protecting user data in the face of attack.Protecting keys in alternate boot modes.Encryption and Data Protection overview.UEFI firmware security in an Intel-based Mac.Additional macOS system security capabilities.recoveryOS and diagnostics environments.Contents of a LocalPolicy file for a Mac with Apple silicon.LocalPolicy signing-key creation and management.Boot process for iOS and iPadOS devices. Secure intent and connections to the Secure Enclave.Face ID, Touch ID, passcodes, and passwords.
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