Summary

  • Downloading files from the internet always comes with risks, such as malware, trojans and ransomware, that may be disguised as harmless items.
  • It is best to always check the downloads are safe before opening them.
  • This can be done via Windows Security, formerly known as Windows Defender, or a paid antivirus software.
  • File extensions should also be checked as hackers may use fake extensions such as ‘photo.jpg.exe’ to infiltrate a system.
  • Using an online virus scanning service such as VirusTotal can also provide an additional opinion on a file.
  • Digital signatures and file hashes, a unique file identifier similar to DNA, can be useful to check the authenticity of a file, especially when downloading software from official sources.
  • Sandbox environments, either as a desktop environment or online tool, can be used to run suspicious files thereby containing any potential attack to the sandbox rather than the entire system.
  • Security warnings and SmartScreen should not be disabled in Windows as they often catch malware that antivirus software may miss.

By Yasir Mahmood

Original Article