It looks like an attacker has targeted a vulnerability in @Apollo's online messaging service, which is used to facilitate communications between employees working across different sites. When an employee makes a voice call, it floods the memory of the application, effectively giving the attacker control over the employee's device. What type of attack is this? Buffer overflow An employee received an email that looked like it came from an @Apollo supplier asking them to click a link to claim a discount Phishing An employee received an automated phone call from the bank advising that @Apollo's account had been compromised and that they must call a specific number to reset the password Vishing An employee received a text message advising that one of @Apollo's software subscriptions is expiring and that they must update the details immediately Smishing An employee clicked on a suspicious email link. Internal/External? Internal An employee granted someone unauthorized access to Apollo's HQ. Internal/External? External An employee connected an infected USB to their work laptop. Internal/External Internal