Breach of Security is by Swedish composer Simon Viklund, known for the electronic scores of Payday: The Heist and Payday 2 from Overkill Software. The track is tied to the Diamond Heist, a jewel theft mission built around stealth, security systems and a high value target. Viklund's Payday music became widely shared online as separate cues and ringtones because each track maps cleanly to a gameplay state like control, anticipation and assault. This alarm state cue survived in edits and soundboards for its clear meaning: the heist has been discovered.