Definition: In this task, you need to generate an appropriate title for the given summary of some paragraph. The generated title must be short and should include the main topic of the given text. Your summary should be less than 20 words long.
Input: Israeli security firm Cellebrite has claimed that it can decrypt messages from Signal's highly secure chat and voice-call app, boasting that it could disrupt communications from "gang members, drug dealers and even protesters".

Signal: Cellebrite claimed to have 'cracked' chat app's encryption