Blocking IPs that attempt too many failed logins (brute-force protection).
This is the most critical point. Security researchers have analyzed thousands of these "Premium Account" text files. While the .txt extension seems safe, cybercriminals use double-extension tricks (e.g., X728.txt.exe ) or embed malicious scripts inside the text file that exploits vulnerabilities in your text editor or download manager. X728 EXPRESS VPN PREMIUM ACCOUNTS.txt