Have you addressed the recent breach reported on May 29th, 2021?

[BrianS76050]

I'm not a customer but one of our employees communicates with two vendors that use your service and hasn't been able to receive product lists via e-mail generated by your company. We were instructed to whitelist the domain r20.rs6.net but upon further research we discovered this breach reported: 

https://us-cert.cisa.gov/ncas/alerts/aa21-148a

Glanced through your forums and didn't see anything addressing it. Don't feel comfortable whitelisting you if this hasn't be addressed at this time.

[William_A]

Hello @BrianS76050 ,

We are aware that the account credentials of one of our customers was compromised, and has already been addressed. To date we have not found evidence of a breach of Constant Contact’s environment.

If you need a full list of CTCT domains to safelist