DHS releases initial guidelines for cyber threat info-sharing.

The Department of Homeland Security is moving forward with the biggest piece of cybersecurity legislation passed last year, issuing preliminary guidance on how the private sector and government will communicate threat data as part of the Cybersecurity Information Sharing Act.

In cybersecurity — possibly more so than most other endeavors — knowledge really is power. Knowing the signature of an attack vector, the telltale signs of certain types of malware or, as DHS Secretary Jeh Johnson suggested, “the subject line of a spear-phishing email or the IP address of the computer from which it originated” can help defenders block malicious traffic and stop hackers in their tracks.

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