The Return of the Invisible Threat: Hidden PUA Unicode Hits GitHub repositorties
It wasn’t long ago that we uncovered compromised extensions on Open VSX. Now, a new wave of attacks is emerging, and all signs point to the same threat actor. The technique will sound familiar: hidden malicious code injected with invisible Unicode Private Use Area (PUA) characters. We first saw this trick back in March when npm packages used PUAs to conceal payloads. Then came Open VSX. Now, the attacker seems to have turned their sights on GitHub, and their methods are evolving.