Uh, the first line of CISPA is probably is big reason why EFF is critical and involved that 4th Amendment issue I mentioned (which is a direct concern about CISPA... where's your hostility coming from?). The Act is only 10 pages, I and many others read it.
"IN GENERAL.—The Director of National Intelligence shall establish procedures to allow elements of the intelligence community to share cyber threat intelligence with private-sector entities and to encourage the sharing of such intelligence."
In case it's vague which direction the sharing is allowed (it's both):
"[Private sector may] share such cyber threat information with any other entity designated by such protected entity, including, if specifically designated, the Federal Government."
Sharing is secret:
"shall be exempt from disclosure
under section 552 of title 5, United States Code"
No recourse for sharing:
"No civil or criminal cause of action shall lie or be maintained in Federal or State court against a protected entity, self-protected entity, cybersecurity provider, or an officer, employee, or agent of a protected entity, self- protected entity, or cybersecurity provider, acting in good faith"
Also, quotes by everyone opposed:
http://en.wikipedia.org/wiki/Cyber_Intelligence_Sharing_and_...
Edit: to reply to your next comment, you frame this as centered on "attacks" but it's more generally characterized as "threats" and also includes any intellectual property theft (which broadens this by several orders of magnitude). And it also includes efforts to degrade a network. Pretty sure my cell phone provider thinks I've made efforts to degrade their network and steal IP since Android was released.