VLC is a popular choice for converting MPG to MP4, but recent reports indicate that it has been exploited by cybercriminals to distribute malware. While VLC itself is not inherently malicious, users must be cautious about downloading it from compromised sources. Other recommended converters include FFmpeg, which operates via command-line, HandBrake, and Shutter Encoder, although HandBrake has previously experienced a security breach where its download was replaced with malware. Users are advised to run conversion software on isolated machines and to scan files for malware post-conversion, as there is no guaranteed way to avoid hacking risks. Open-source software repositories are also increasingly targeted by hackers, posing additional security concerns.