Twitter, issues the list annually, hailing "independent researchers that volunteer their time and help us recognize problem area and improve security."
Seventeen people were included in the list in 2012. The four Israelis in question are all cyber-security experts who are employed by top Israeli information security firms.
The four were credited for recognizing a crucial "hole" in Twitter itself and in its smartphone application, that could potentially allow hackers to take over user accounts.
They also offered solutions and helped Twitter through the repair process.