The group has been tied to the 2017 campaign, known as Frozen Cell, by using of the same social media profiles to promote the malware.

Website defacement is increasingly becoming a staple in the toolkit of activists looking to bring attention to their causes online, according to a report from cybersecurity company Trend Micro.

According to mobile security firm Lookout, a group called "Two-tailed Scorpion" has been able to remotely collect thousands of hours of stolen audio from infected smartphones across the Gaza Strip.

"What we do know is that several of the malicious files were submitted to a public malware analysis site from the Palestinian Territories."