The hackers displayed messages conveying anger toward Hezbollah and Iran for attempting to drag Lebanon into a war with Israel.
"Shin Bet chief Ronen Bar recently spoke on the issue of expanding the responsibilities of the security agency" and its "intent to reach all Hamas leaders anywhere in the world."
"The consequences of this terror will be felt by [the US]," Iranian Defense Minister Mohammad Reza Ashtiani warned.
Hamas leader Ismail Haniyeh has said that Hamas “will never be defeated," after the assassination of its deputy leader Saleh al-Arouri in Lebanon by Israel.
Hamas chief said the assassination was a “terrorist act,” a violation of Lebanon’s sovereignty, and an expansion of Israel’s hostility against Palestinians.
Hamas leader Ismail Haniyeh expressed outrage at the assassination, stating, "the occupation’s assassination of Arouri and his brothers is a complete terrorist act."
IRGC officers worked with Hamas since August to plan incursions from the "air, land, and sea."
Palestinian officials from Hamas and the Popular Front called to escalate terrorist activities against Israel.
New reports on Saturday afternoon identified the two suspects as two Russian citizens who were allegedly recruited by Israel for spying missions.
The 23-year-old from Syria's al-Tal region entered Lebanon illegally and settled with his relatives in Al-Salam, a southern suburb of Beirut, the security source said.