Comparison Overview
Post Office Ltd
Post Office Ltd
100 Wood Street, London, EC2V 7ER, GB
Last Update: 02/08/2026
We’ve come a long way since it all started over 380 years ago. We’ve built up a network of 11,500 branches across the country. To give you a sense of how big that is, we’ve got more branches than the four biggest banks in the UK put together. Or put simply, we’re the ...
H&R Block
One H&R Block Way, Kansas City, 64105, US
Last Update: 31/03/2026
H&R Block’s purpose is simple: To provide help and inspire confidence in our clients and communities everywhere. We’ve been true to that purpose since brothers Henry and Richard Bloch founded our company in 1955. Since then, we’ve prepared approximately 800 million tax ...
Compliance Ranges Comparison
Post Office Ltd
H&R Block
Benchmark & Cyber Underwriting Signals
Incidents vs Retail Industry Avg (This Year)
No incidents recorded for Post Office Ltd in 2026.
Incidents vs Retail Industry Avg (This Year)
No incidents recorded for H&R Block in 2026.
Incident History - Post Office Ltd (X = Date, Y = Severity)
Post Office Ltd cyber incidents detection timeline including parent company and subsidiaries.
Incident History - H&R Block (X = Date, Y = Severity)
H&R Block cyber incidents detection timeline including parent company and subsidiaries.
Notable Incidents
Post Office Ltd
H&R Block
FAQ
Latest Global CVEs
An issue in the SBN UDP interface of NASA cFS v7.0.1 allows attackers to cause a Denial of Service (DoS) via transmitting a crafted SBN frame.
A stack-based buffer overflow vulnerability exists in the cmd_edl function of OreSat Firmware v1.0. The vulnerability is triggered when processing the edl fw_flash command, where the <filename> argument is copied to a 64-byte stack buffer via memcpy without proper length validation. An attacker with physical access to the UART3 serial interface can exploit this vulnerability by sending a maliciously crafted command with an oversized filename parameter,
Adobe Campaign Classic (ACC) is affected by a Violation of Secure Design Principles vulnerability that could result in a Security feature bypass. An attacker could leverage this vulnerability to bypass security measures and gain unauthorized read access. Exploitation of this issue does not require user interaction.
Adobe Campaign Classic (ACC) is affected by an Incorrect Authorization vulnerability that could result in privilege escalation. An attacker could exploit this vulnerability to gain elevated privileges. Exploitation of this issue does not require user interaction.
Adobe Campaign Classic (ACC) is affected by a Server-Side Request Forgery (SSRF) vulnerability that could result in privilege escalation. Exploitation of this issue does not require user interaction. Scope is changed.