Systems, methods, and computer media for collaboratively securing software applications are provided herein. Through a collaborative approach, the described examples allow detection and management of unauthorized users across applications and application suites. By communicating details regarding cyber-attacks among applications, threats to applications can be managed pre-emptively. For example, applications can use attacks on other applications to implement new honeytokens, threat detection points, and blacklisted usernames or other identifiers to limit data access in future attacks.