If you think about it more than one should, mobile app advertising is also a type of retail network. Which brings us to a pair of acquisitions: App business platform IronSource is buying mobile app monetization platform Tapjoy for $400 million, and mobile marketing platform InMobi is buying app analytics vendor Appsumer. You may recall it was just last week that AppLovin bought MoPub (something we reported backwards, it pains me to admit).

Acxiom has partnered with Adobe to make its Real Identity service available within Adobe Experience Platform.   Real Identity provides the technology to build private identity graphs with a company’s own data.  That’s different from connecting to identity graphs based on third party data.

Tech is fun but a little caution is always a good idea.  This Pentagon-funded report on blockchain says that, whatever its theoretical virtues, existing real-world implementations contain major security weaknesses.  Raise your hand if you’re shocked.