“We’re not winning.” — Shawn Henry, executive assistant director of the FBI, on the war with computer hackers. (The Wall Street Journal)

* Apple (AAPL) says concerns about the new iPad’s battery charging process is much ado about nothing. “That circuitry is designed so you can keep your device plugged in as long as you would like,” Apple VP Michael Tchao told All Things D. (All Things D)

* Facebook revised its IPO filing yesterday to factor in the escalating patent fight with Yahoo (YHOO). (The Wall Street Journal)

* At startup incubator Y Combinator’s Demo Day, investors clamored for time with entrepreneurs, a big role reversal compared with years past. Also: a large chunk of the featured products were mobile-focused. (Bloomberg and TechCrunch)

* Why it’s time to strike down the “Amazon (AMZN) exemption.” (Fortune)

* Google’s (GOOG) long-rumored cloud storage service, Google Drive, could arrive next month. (GigaOm)

* Barack Obama is on Pinterest. For a primer on the growing digital pinboard site, check out Fortune’s feature in the latest issue. (VentureBeat and Fortune)

* Groupon (GRPN) is reportedly on an engineering hiring spree. (Business Insider)

Don’t miss the latest tech news. Sign up now to get Today in Tech emailed every morning.