Adding Digital Signatures and Security Settings
PDFs have evolved from simple read-only pages to documents rich with features that include interactive forms, multimedia, scripts, attachments, and much more. The exciting possibilities unfortunately make the files vulnerable to malicious code that can steal data, damage your computer, or waste resources.
Security lets you protect computers and entire networks against these threats by either blocking potentially damaging actions or selectively permitting those only from trusted files and locations. As everyone adopted the use of .pdf format as a common digital page, concern for the privacy of the content of many types of documents, such as personal taxes or confidential correspondence, also became an issue.
Security concerns can be addressed in two general categories: software active on users’ systems or other devices, and .pdf document content security.
Application security is meant to protect Acrobat and Reader against...
