Google is to acquire web-based encryption and archiving software company Postini in a $625 million (£310 million) deal. Postini sells its products to more than 35,000 businesses and 10m users worldwide. The acquisition is expected to be completed later this year. Google already bought DoubleClick and YouTube earlier this year, paying $3.1 billion (£1.5 billion) and $1.65 billion (£807 million) respectively. - www.google.com; www.postini.com.

- RFID specialist Assa Abloy Identification Technologies (ITG) has acquired Aontec, an Irish-based manufacturer of inlays for secured electronic documents. Juan Garcia, CEO of ITG, said: "This acquisition enables us to expand into new geographical markets and further grow our market share." - www.aaitg.com; www.aontec.com

- Mobile has signed a three-year deal with technology security company SecurEnvoy. The contract enables T-Mobile's remote employees to gain secure access to corporate systems via their mobile phones, using the SecurAccess two-factor authentication solution. - www.t-mobile.co.uk; www.securenvoy.com

- Oracle's universal content management and information rights management systems have been chosen by the Renault Formula 1 team to manage and secure their critical documents. - www.oracle.com; www.ing-renaultf1.com

- French information security solutions vendor Arkoon Network Security has joined forces with Commtouch Software. Commtouch will provide anti-spam protection to Arkoon's FAST360 unified threat management customers across Europe. - www.arkoon.net; www.commtouch.com

- AEP Networks is to provide UK legal practice Michelmores with a secure remote access system. AEP's Netilla Security Platform and SSL VPN appliance will be deployed across the law firm. - www.aepnetworks.com; www.michelmores.com.