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PC Gamer
PC Gamer
Jess Kinghorn

Keystroke lag alerts Amazon security staff that recent US-based IT hire was actually in North Korea

Palo Alto, CA, USA - Feb 18, 2020: The Amazon logo seen at Amazon campus in Palo Alto, California. The Palo Alto location hosts A9 Search, Amazon Web Services, and Amazon Game Studios teams.

Lag. We all know it, and we've all felt the frustration that it wreaks, whether you're caught in a crunchy video call or watching a pal haplessly teleport around the map in Arc Raiders. However, it's now being used as an unlikely piece of evidence in another bizarre tale of alleged corporate espionage.

Amazon began to suspect something was amiss when it looked at the keystroke data from a new IT hire. To the company's knowledge, the employee was US-based so there should have been a comfortably less than 100 millisecond delay between them typing commands on their corporate laptop, and those inputs reaching the head office in Seattle. However, the delay was in fact 110 milliseconds, suggesting the employee was based further afield than first thought.

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