API vulnerabilities

On an otherwise ordinary day, large parts of Spain and Portugal were unexpectedly plunged into darkness. The lights went out, trains halted, elevators froze, and thousands were left to wonder what had just happened. The blackout rippled across the Iberian Peninsula, triggering everything from commuter chaos to questions about infrastructure readiness. While the cause may […]

For various reasons beyond my control, I find myself engaging with Grandstream multiple times a year. With each interaction, I uncover a new vulnerability. For those fortunate enough to be unfamiliar with them, Grandstream is a prominent provider of VoIP and wireless devices. In my previous encounters, I discovered an account takeover vulnerability in their