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LockLizard Limited is a British software company that specializes in digital rights management (DRM) security for PDF documents, USB flash drives and eBooks. [1] It was founded in 2004 by Trevor Mathews to provide Document DRM software that uses encoding and encryption to protect against unauthorized copying, sharing, unlimited printing or ...
Users establish their identity, without using their forgotten or disabled password, by answering a series of personal questions, using a hardware authentication token, responding to a notification e-mail or, less often, by providing a biometric sample such as voice recognition. Users can then either specify a new, unlocked password, or ask that ...
PDFtk (short for PDF Toolkit) is a toolkit for manipulating Portable Document Format (PDF) documents. [ 3 ] [ 4 ] It runs on Linux , Windows and macOS . [ 5 ] It comes in three versions: PDFtk Server ( open-source command-line tool ), PDFtk Free ( freeware ) and PDFtk Pro ( proprietary paid ). [ 2 ]
Can append output to an existing PDF file. Supports strong password-based PDF security. Allows PDF metadata—including author, title, subject, and keywords—to be set. Create files for PDF version 1.2, 1.3, 1.4, or 1.5; The software uses OpenCandy (which includes spyware) to deliver advertisements.
• Use a strong password and change it regularly - Create a strong password to minimize the risk of unauthorized account access. • Add another level of security - Turn on two-step verification and get sent a security code when someone logs in from an unfamiliar device or location.