A computer virus attacked thousands of Israeli Facebook subscribers days before a threatened mass cyber attack on Israeli websites.
The websites of several congregations hosted by the Union for Reform Judaism were hacked and linked to anti-Semitic websites.
Saudi hackers released the credit card information of hundreds of thousands of Israelis online.
The website of the Jewish People Policy Institute was hacked Thursday by a group that the institute claims is affiliated with Hamas. The JPPI, a Jerusalem-based think tank that focuses on the Jewish future and Israel's security, issued a statement saying hackers took over its website, then posted a picture of an Israeli tank and a Palestinian child on the English section, and removed a recently uploaded assessment and analysis documents.