Computer network security company CyberGuard will acquire German web filtering provider Webwasher.
Under the deal, CyberGuard will pay $40m (£23m) in cash and stock, and up to an additional $10m in stock if Webwasher achieves certain revenue and profit targets.
The Webwasher acquisition follows CyberGuard's $16m purchase in November of SnapGear, a developer of Linux-based security and firewall security appliances.
Earlier last year, the security specialist paid $1.5m for some assets of NetOctave, a supplier of silicon-based network security systems. NetOctave manufactures security processors and accelerator boards and cards for SSL (Secure Sockets Layer) and IPSec (Internet Protocol security) markets.
The core market of Webwasher is Central Europe, where CyberGuard is keen to expand its presence.
Webwasher, which was founded in 1999 by German electronics giant Siemens and later spun off as a separate company, provided internet security solutions for enterprises, educational institutions and government agencies. The company offers a range of web filtering tools including URL, antispam, anti-virus and instant message filters, as well as an SSL scanner.
Webwasher will operate as an wholly owned and independently managed division of CyberGuard.
CyberGuard builds firewall and VPN (virtual private network) systems.
John Blau writes for IDG News Service