Free online file converters, a go-to for tasks like converting M4A to MP3 or merging PDFs, are increasingly becoming tools for cybercriminals. According to an FBI report, these seemingly helpful services may deliver malware alongside converted files, putting sensitive personal data at risk.

The hidden malware can extract critical information such as bank details, social security numbers, and even cryptocurrency credentials, leading to identity theft or financial fraud. Worse yet, some infected converters can lock your data with ransomware, demanding payment for access.

To protect yourself, only use reliable file converters or consider investing in trusted software. Remember, if it looks too good to be true, it probably is. Stay vigilant.