Kontera is hacked

Update on January 29: It is a big upgrade for the Publisher Center. Not hack.
Kontera is a good Ads provider.
Today when I login my account by click the “account login” from the home page of Kontera.


I got the plain page with the H1 tag. It said “It works!”.

The information seems that Kontera is hacked by someone.
If it is a scheduled maintenance, they may post some detailed notes, not the shot text “It works!”.
The text on the login page, ” It works!” looks like some hacker really did something on Kontera.
I have some concern about the account safety of publishers and advertisers.
Data security is very important, especially there are so many data related to the users’ financial information.