Before revision: Israel has used its existing surveillance tools to track and send messages to those who are required to quarantine themselves 's internal security service, Shin Bet, had already tracked all Israeli phone-call metadata for decades prior to the outbreak, and in March 2020 was ordered by emergency decree to track and notify people exposed to the virus.
After revision: Israel 's internal security service, Shin Bet, had already tracked all Israeli phone-call metadata for decades prior to the outbreak, and in March 2020 was ordered by emergency decree to track and notify people exposed to the virus.