Security firm AlienVault has added a new feature to its Open Threat Exchange (OTX) crowdsourced intelligence-sharing system which allows organisations to monitor their networks for rogue traffic entering or leaving.

Called OTX ThreatFinder, the free-to-use system correlates log files showing traffic patterns with a list of malicious hosts drawn from the OTX database. ThreatFinder also turns traffic patterns it detects into an interactive location map.

According to AlienVault, there is no need to install any hardware or software to use the service, which accepts raw log files for upload; although the system integrates with the firm's Unified Security Management (USM) platform, as with other parts of the OTX system it can be used without it.

Participants do have to sign up to become part of the OTX crowdsourcing system however although all data fed into it is anonymised.

“In today’s evolving threat landscape, it has become more of a challenge for organisations, particularly those in the mid-market, to detect where the true threats lie without tapping into a broader and often already-stretched IT budget,” said AlienVault's vice president of product strategy, Russ Spitler.

“By offering this capability as a free tool, AlienVault helps organisations gain greater visibility into their networks and makes existing IT resources more effective in rapidly detecting and responding to threats.”

After launching OTX in 2012, AlienVault eventually threw it open to all comers. Since that point it has gradually expanded the features of the system, including adding an IP reputation-checking lookup last summer.

OTX now has 8,000 contributing organisations across 140 countries. Around 17,000 updates are added to it every day, the firm said.