Bad code such as viruses, ransomware, and spyware can destroy information, steal identities, or ransom off the devices. It is better to prevent than to cure: protect your computers, phones, and tablet computers with the following basic steps to prevent 99% of threats.
Keep Software Updated Automatically
Hackers have playgrounds in vulnerable OS, applications and browsers. Allow Windows, macOS, iOS, Android to update automatically- security patches within hours of release. Reboot computers once a week; do not care about the later. Web extension programs such as uBlock Origin update automatically as well.
Install and Run Reputable Antivirus
Most of the threats are detected by free programs such as Windows Defender or Malwarebytes, which should be run on a weekly basis. Premium packages (Bitdefender, Norton) include the real-time web protection and ransomware shields. Android: Avast Mobile; iOS: Use Limited but use Lookout. Check downloads at VirusTotal.com and open.
Avoid Risky Downloads and Links
Always avoid opening email attachments and clicking on shortened URLs (bit.ly) of strangers. Only download in official stores, which are App Store, Google Play, and Microsoft Store. Torrent sites and free cracked software programs contain malware. Hover links to preview destinations, type bank URLs manually.
Use Strong, Unique Passwords with 2FA
Password manager (Bitwarden, LastPass) is a generator of uncrackable passphrases; reuse accounts are broken immediately. Activate two-factor authentication at all locations- texts, applications or hardware keys prevent unauthorized access to accounts even when passwords are compromised.
Secure Networks and Browsing
VPN over Wi-Fi (ProtonVPN free version) and snoop traffic. Home router: Revert default password of administration to WPA3 encryption. Do not use free hotspots to do banking. Ad-blockers prevent evil advertisements; delete cookies every month.
Backup Religiously with 3-2-1 Rule
Three copies on two media types, one of them offsite, are made by external drives + cloud (encrypted Backblaze/iDrive). Weekly automation, quarterly testing. In case of ransomware, clean up and restore.
Smart Habits Seal the Deal
Do not use unknown USBs; do not accept browser pop-ups. Scan downloads; watch task manager on bizarre CPU usage. Train family-shared devices are risky.
Action now: Change today, scan devices, use 2FA. It only takes a few minutes to prevent and days to clean up.
