Safest Companies — Best Security Record
Companies ranked by their Recent Breaches Safety Grade — a higher grade means a cleaner publicly known breach record. This ranking includes companies with no known breach at all. A high grade is not a guarantee of safety or an audit of current security controls.
Ranked safest first
Marcus Errico Emmer & Brooks, P.C.
Marin Cancer Care
Mariner Wealth Advisors, LLC
Mario Susi & Son, Inc.
Maritz Holdings Inc
Mark J. Bronsky
Mark Leyden & Associates, LLC
Marking Services, Inc.
Markowitz
Marquis
Marsicovetere & Levin Law Group, P.C.
Marsicovetere & Levine Law Group, P.C.
Martin & Cukjati, LLP
Mass General Brigham
Mass General Brigham (Home Care)
Mass General Hospital
Massachusetts Bay Transportation Dept
Massachusetts Department of Transitional Assistance
Massachusetts Housing Investment Corporation
MasTec
MasTec, Inc.
Master Millwork, LLC
Max Usa Corp.
Maximus US Services Inc
Mazzola Mardon, P.C.
The Recent Breaches Safety Grade is an automated, informational rating of a company’s publicly known breach history — how many breaches are on record, how recent and severe they were, how much data was exposed, whether ransomware/extortion was involved, and how well each claim is verified. A higher grade means a cleaner known record. It is not a guarantee of safety, an audit, or a certification: the absence of a known breach does not prove none has occurred, and the grade says nothing about a company’s current security controls. Unverified leak-site claims are weighted down but may still be incomplete or inaccurate. Recent Breaches and GalaxyWarden are independent and are not affiliated with, and do not endorse, any company named here. Provided for general awareness only — not legal, financial, or security advice.