Does Fresh Security act legally?

Fresh Security gathers information from open source, using open-source intelligence (OSINT) techniques. For completeness, the UK's National Police Chief's Council defines open source as:

"Open Source is defined as publicly available information (i.e. any member of the public could lawfully obtain the information by request or observation). It includes books, newspapers, journals, TV and radio broadcasts, newswires, Internet WWW and newsgroups, mapping, imagery, photographs, commercial subscription databases and grey literature (conference proceedings and institute reports)." (https://www.suffolk.police.uk/sites/suffolk/files/003525-16_npcc_guidance_redacted.pdf)

To ensure privacy, Fresh Security only gathers and processes information when requested. Detailed information is only accessible by proving control of an email address in a relevant domain. This is something Fresh Security validates every time a customer logs into the service dashboard.