Attackers reportedly stole payment card information at nine zoos between March and June.
Affected institutions are encouraged to participate in public comment on the assessment tool.
The council asks financial institutions to assess the state of their cyber-risks.
Verisign attributes the findings to an uptick in DDoS attacks against financial services and public sector industries.
Credit unions will be able to join leading cybersecurity group at a discount.
One network traffic firm says financial institutions are hit weekly.
Cybersecurity and Critical Infrastructure Working Group will enhance communication among member agencies, the NCUA said.
House panel says it will investigate DHS mission, capabilities as infrastructure attacks, including on banks and credit unions, mount.
Agency issues first alert of 2013 after none in 2012, with guidance on how to address risk of website takedowns.
Industry experts, FBI, FS-ISAC weigh with advice after denial of service attacks against big banks, warning to credit unions.