Inventor · Topsfield, MA, US

Karl Ackerman

38Patents
9h-index
46Co-inventors
75Inventor score

Filing activity: Nov 5, 1980 → Aug 14, 2023

Most-cited inventions

PatentTitleAreaCited byStatus
US8966276B2 System and method providing disconnected authentication Electricity 77 Active
US9160742B1 Localized risk analytics for user authentication Electricity 37 Active
US9038134B1 Managing predictions in data security systems Electricity 31 Active
US8955066B1 Knowledge based authentication using recent user internet activity Physics 17 Active
US8752148B1 Processorless token for producing a one-time password Electricity 15 Active
US9119069B1 Near field communication based authentication Electricity 14 Active
US8452980B1 Defeating real-time trojan login attack with delayed interaction with fraudster Physics 13 Active
US11165797B2 Detecting endpoint compromise based on network usage history Electricity 9 Active
US11102238B2 Detecting triggering events for distributed denial of service attacks Electricity 9 Active
US8800027B1 Authentication using privacy protected personally identifiable information Electricity 9 Active
US8978150B1 Data recovery service with automated identification and response to compromised user credentials Electricity 7 Active
US8918844B1 Device presence validation Electricity 7 Active
US11836664B2 Enterprise network threat detection Physics 5 Active
US8949953B1 Brokering multiple authentications through a single proxy Electricity 4 Active
US10986109B2 Local proxy detection Electricity 4 Active
US9525551B1 Randomly skewing secret values as a countermeasure to compromise Electricity 2 Active
US9240986B1 Managing security and wireless signal detection Electricity 2 Active
US9305153B1 User authentication Physics 2 Active
US11736522B2 Server-client authentication with integrated status update Electricity 2 Active
US11616811B2 Tracking usage of corporate credentials Electricity 1 Active
US12026276B2 Data augmentation for threat investigation in an enterprise network Electricity 1 Active
US12273382B2 Multi-factor authentication Electricity 1 Active
US8902043B1 Mitigating conformational bias in authentication systems Physics 1 Active
US11258821B2 Application firewall Electricity 1 Active
US11853425B2 Dynamic sandbox scarecrow for malware management Physics 1 Active

Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.