Dish Network claims national security concerns with Sprint-Softbank deal: Dish Network has undertaken a major media campaign — including taking out a full page ad in The Washington Post — to suggest that the acquisition deal between Softbank and Sprint will cause national security problems.

Dish’s own $25.5 billion offer for Sprint rivals a $20.1 billion bid from Softbank, a Japanese wireless carrier. Because Softbank is a foreign-based firm, the deal has to go through review at the Committee on Foreign Investment in the United States (CFIUS) as well as the Department of Justice and the Federal Communications Commission.

The ad compares the deal to the “Dubai ports” controversy in 2006, when Dubai Ports World purchased contracts to manage operations at six major U.S. ports.

The ad reads, “in an ever advancing world, ‘ports’ may change, but keeping them in American hands never should. Don’t outsource our national security.”

Twitter adds two-step verification: Twitter has added a second layer of security to its accounts, prompting users to share their phone numbers with the service to have a second code texted to their devices.

The move follows what rivals Google, Facebook, Apple and Microsoft have already done with their service in an attempt to fend of criminals who steal usernames and passwords to take over control of social media accounts.

Users have been clamoring for Twitter to add the feature particularly after the high-profile hijacking of Twitter accounts of organizations such as the Associated Press.

Apple cites Samsung Galaxy S4 in complaint: Apple has filed a motion against Samsung in a California court claiming that the Korean company’s Galaxy S 4 phone and Google’s Google Now service infringe on Apple patents, FOSS Patents reported, Samsung announced Thursday that the Samsung Galaxy S 4 has sold 10 million units in under a month.

In a motion filed Wednesday, Apple names five patents it believes the S4 violates and two it claims are violated by the search app.

As FOSS Patents blogger Florian Mueller noted, Apple had previously informed the court that it would file the motion to include Samsung’s newest phone for a second patent case expected to take place in the spring of 2014.

Last year, a jury ordered Samsung to pay Apple around $1 billion in damages for infringing on the company’s products.

STEM visa bill: Reps. Darrell Issa (R-Calif.) and Bob Goodlatte (R-Va.) Thursday unveiled a new bill that would make it easier for foreign-born students studying for advanced degrees in science, technology, engineering and mathematics to stay in the country by opening 55,000 green cards to qualifying students, increasing the number of highly skilled H1-B visas available to non-students and includes a special type of visa for entrepreneurs.

The act, called the Supplying Knowledge Based Immigrants and Lifting Levels of STEM Visas (or SKILLS) Act, has the support of several technology industry groups including the Consumer Electronics Association, Compete America, inSPIRE STEM USA, the Internet Association and the Information Technology Industry Council.