Aleksanteri Kivimäki

Aleksanteri Kivimäki
Born
Julius Aleksanteri Tomminpoika Kivimäki

(1997-08-22) 22 August 1997
Finland
Other namesJulius Kivimäki, zeekill, ryan
OccupationHacker
Criminal statusConvicted
ConvictionsAggravated data breach, extortion, privacy violations

Aleksanteri Tomminpoika Kivimäki (formerly Julius Aleksanteri Tomminpoika Kivimäki; born 22 August 1997), known online as zeekill, is a Finnish hacker and cybercriminal. In 2024, he was convicted for one of Finland's largest cybercrimes, the Vastaamo data breach. He first gained attention as a teenager, when he was linked to the hacking collective Lizard Squad and convicted in 2015 on over 50,000 counts for computer intrusions.

A four-episode Max Original documentary series about Kivimäki, Most Wanted: Teen Hacker, will be released on HBO Max in September 2025.