In a pure mathematical attack, (i.e., lacking any other information to help break a cipher) two factors above all count: 1  Computational power available, i.e., the computing power which can be brought to bear on the problem. 2  Key size, i.e., the size of key used to encrypt a message.
OMB's guidance to agencies requires them to report each PII-related breach to DHS's U.S. Computer Emergency Readiness Team (US-CERT) within 1 hour of discovery. However, complete information from most incidents can take days or months to compile; therefore preparing a meaningful report within 1 hour can be infeasible.
Reporting is required when the owner of the fleet chooses to use the âExtension of Deadline for Unavailability of Verified Diesel Emission Control Strategy,â which applies to buses on which a PM filter cannot be installed. The reporting requirements apply on January 31 of each compliance year through January 31, 2017.