Verge copies Shield code 1 month later after being attacked twice.
https://shieldx.sh/
https://vergecurrency.com/
https://github.com/vergecurrency/VERGE/commit/f8ca082646f9d98f5856e341097807ba06268464
http://archive.is/bk2J2
References:
"Network Attack on XVG / VERGE"
https://bitcointalk.org/index.php?topic=3256693