Citation Hunt

The Wikipedia snippet below is not backed by a reliable source. Can you find one?

Click I got this! to go to Wikipedia and fix the snippet, or Next! to see another one. Good luck!

In page IPsec:

This text has been unreferenced on Wikipedia for a very long time. If you can't find a source, be bold and remove it!

"

A second alternative explanation that was put forward was that the Equation Group used zero-day exploits against several manufacturers' VPN equipment which were validated by Kaspersky Lab as being tied to the Equation Group[7] and validated by those manufacturers as being real exploits, some of which were zero-day exploits at the time of their exposure.[8][9][10] The Cisco PIX and ASA firewalls had vulnerabilities that were used for wiretapping by the NSA[citation needed].