The world's largest electronics maker by revenue said the US' National Information Assurance Partnership (NIAP), an IT product evaluator under the NSA, has approved and listed the Galaxy Note 4 and other Samsung devices on its Commercial Solutions for Classified (CSfC) program listing.
Approved products include the Galaxy S4, Galaxy S5, Galaxy Note 3, Galaxy Note 4, Galaxy Note 10.1 (2014 Edition), Galaxy Note Edge, Galaxy Alpha, Galaxy Tab S 8.4, Galaxy Tab S 10.5, and the Galaxy IPSEC Virtual Private Network (VPN) Client.
The listed products are now available for use on classified government networks, and can be used to store sensitive data by the US government.
Samsung boasted that the approval was a direct result of its pass certification by the US' Common Criteria Mobile Device Fundamental Protection Profile (MDFPP) and VPN Protection Profile (VPNPP) program.
"The inclusion of Samsung mobile devices on the CSfC list proves the unmatched security of Samsung Galaxy devices supported by the Knox platform," said JK Shin, CEO and president of IT and mobile business, Samsung, in a statement.
"At Samsung, we continue to address today's increasingly complex security challenges, and are committed to delivering the most reliable mobile platform satisfying the needs of professionals in all industries, from SMBs and enterprises to governments and additional regulated markets."
Samsung devices were also included on the Defense Information Systems Agency (DISA) approved product list earlier this year, though it couldn't be used to handle classified material then.
The Korean tech giant is the only company listed on both DISA and CSfC.