Linhagem do fabricante
Proof - managed detection, and another one absorbed
Rio de Janeiro security firm acquired by SEK in 2024.
Proof was a Rio de Janeiro information-security company with more than fifteen years of activity, offering managed detection and response alongside governance, risk and compliance consultancy, and it had built its own platform. SEK acquired it in April 2024.
The acquirer is the part that completes a pattern this timeline has been recording. SEK, which has its own entry here, was itself assembled by an investment manager from the union of two existing security companies - NeoSecure of Chile and Proteus of Brazil - funded to consolidate the Latin American market, and had already bought a cloud-security startup before this deal.
So the sequence for Brazilian security firms of this size is now well documented here from four separate directions: Tempest to an aircraft manufacturer, Cipher to a physical-security multinational, Skybox to a competitor, and Proof to a private-equity roll-up. The buyers differ; the outcome for an independent specialist does not.
- TI Inside and Inforchannel, April 2024 - SEK acquires Proof, a Rio de Janeiro information-security company with more than 15 years of activity, offering managed detection and response and governance, risk and compliance consultancy; the deal brought over 100 clients and more than 120 professionals, took SEK’s consolidated revenue to about US$140 million, and added Proof’s own PaeSi platform
- IT Forum, 18 April 2024 - SEK (Security Ecosystem Knowledge), the cybersecurity arm of Patria Investimentos, announced the acquisition of Proof, a managed detection and response and consulting specialist; combined revenue of about US$140 million; SEK created by Patria in March 2023, and CleanCloud, a Brazilian cloud-vulnerability startup, acquired in April 2023
Replaces SEK's own republication of a Valor report, which now answers 404 (it redirects to an /en/ path that does not exist), confirmed by a second client on 2026-09-27.
- TI INSIDE, 17 April 2024 - after the Proof deal, more than 400 professionals in Brazil and more than a thousand across Latin America, on a base of about a thousand clients in the region; CleanCloud described as a Brazilian startup specialising in cloud vulnerability scanning with operations in Latin America and the United States
Carries the headcount figures the dead sek.io citation was relied on for. Neither of these two reports names Proteus and NeoSecure as the companies SEK was built from, nor the US$250 million commitment; both of those are separately sourced in SEK's own entry in this file, to IT Forum of March 2023 and TI Inside of March 2023, so no claim here is left uncited.
- Proof by SEK - the company states that after fifteen years of operation in the Brazilian market it became part of SEK on 17 April 2024, extending its reach to Argentina, Chile, Colombia and Peru
This year is DERIVED, not stated: fifteen years of operation as of 17 April 2024 places the start in or about 2009. No exact founding date was found, and the figure should be replaced if a registry record or first-party statement of the year turns up.