| Company | Purchased | Gains | Terms |
| Blue Coat Systems | Solera Networks | Addition of security analytics and forensic functions to future products. | Undisclosed |
| CA Technologies | Layer 7 Technologies | CA will integrate tools to manage APIs into its own IAM suite. | Undisclosed |
| Cisco | Sourcefire | Expands the company's IT security portfolio and threat-research offerings. | $2.7b |
| EMC | Aveksa | Extends mobile device portfolio with cloud and on-premises provisioning and SSO technology. | Undisclosed |
| IBM | Trusteer | Extends Big Blue's data security capabilities into the cloud, mobile and endpoint security space. | $1b |
| SoftLayer | IBM builds out its public cloud offerings. | Undisclosed | |
| McAfee (Intel) | Stonesoft | Adds next-generation firewalls and intrusion detection. | $389m |
| Microsoft | Nokia | Microsoft acquires a global mobile device business. | $7.2b |
| Yahoo | Tumblr | Yahoo will take over operations of the social media blogging site. | $1.1b |
| Verizon | Vodaphone | Will enhance its ability to offer customers "seamless and integrated services." | $130b |
| Vista Equity | Websense | Private equity firm aquires the internet security firm. Goes private with little expected to change. | $1b |
Content
Top mergers and aquisitions activity in 2013
Staff reportA look at the top mergers and acquisitions in the information security industry this year.
Get daily email updates
SC Media's daily must-read of the most current and pressing daily news