The ballot box in the POLYAS Online Voting System CORE 2.5.0 is given a checksum that is unique worldwide (64-digit hexadecimal number). Any changes made to the file will change the checksum. The checksum can be checked with the verification tool.
POLYAS CORE 3.0 provides election officers and eligible voters numerous options for verifying that the election was processed and counted correctly.
Universal verification allows election organizers to use an open source verification tool to check whether the processing of the election and the counting were conducted with integrity. Also, the POLYAS Online Voting System is protected against brute force attacks and DDoS attacks by limiting the number of attempts to access the systems per unit of time, and by distributing the system across various servers in order to avoid a single point of failure.