What you need to know in advertising today

Happy second day of Advertising Week.

On Monday, Facebook's Carolyn Everson addressed the company's widespread cyber attack late last week that impacted nearly 50 million users.

Everson said that she spent the weekend contacting advertisers and answering their questions. Importantly, she pointed out that reactions to the attack were far different from advertisers' concerns about the Cambridge Analytica scandal, which could have been prevented.

"There's empathy around the fact that we're all dealing with this incredible threat, and that at any given moment there can be a cyber attack on anyone," she told a room of advertisers. "And certainly, we're not the only company to have had a situation like this."

Click here to read more about what Everson told advertisers.

Also during Everson's talk, she took a jab at WhatsApp founders Jan Koum and Brian Acton. Acton has publicly discussed how he and Koum disagreed with Facebook's plans to monetize their app after it was acquired.

"Brian and Jan sold the company for a lot of money, $19 billion," Everson said. "They both did very well. I would love to hear them talk more about their philanthropy."

Elsewhere at Advertising Week:

Brian Lesser, CEO of Xandr, AT&T's newly launched advertising and analytics division, talked about the group's goals to shake up television advertising during a keynote presentation, reports Mediapost.

According to CNBC, YouTube is starting to offer advertisers "ad extensions for video," which are sponsored links that appear below videos.

In other news:

Google's longtime advertising chief is leaving after 15 years to join VC firm Greylock. Sridhar Ramaswamy, who helped build Google's ad business into a money-machine, is leaving to become a venture partner at Greylock Partners.

Facebook just appointed a 10-year company veteran to replace Kevin Systrom as the head of Instagram. Instagram has named Adam Mosseri, the current VP of product, to head up the photo sharing platform.

Google may have pulled off a TV ad tech coup just as Comcast and Disney were duking it out over Fox and Sky. Disney has for months been weighing whether to ditch Comcast's video ad tech for Google's.

The Atlantic thinks it's found a winning formula for events by leaning on its weighty journalism, and the business is booming. The Atlantic Festival this week will be the publication's largest stand-alone event with more than 15 underwriters and 2,500 attendees.