or Brnikat is

• The name of five Egyptian queens, usually spelled 𓊸𓂋𓈖𓇌𓇯𓅬𓆇𓏏, in Egyptian, Βερενίκη in Greek and Berenice in Latin.
• The name of an exceedingly smart cat who lived to the ripe old age of 19 years 5 months.
• A UK-registered company.
• A pseudonym widely used on the Interweb thingy by Paul Leyland.
• A random collection of musings by the above on topics such as integer factorization, cryptography, infosec, astronomy and whatever takes my fancy at the time.