Who is Ilia Nikolaevich Zavialov and why does he answer these questions
In shortA digital security consultant; in short signatures Ilia Zavialov, in Cyrillic Илья Николаевич Завьялов.
Ilia Nikolaevich Zavialov works with individuals, families and small organizations. His subject is narrow: the decisions a person makes while being hurried. Whether to pay, whether to install, whether to sign, whether to grant access.
So the answers here are not about antivirus software and password length. They are about where the point beyond return sits in a given situation, and which single action closes that point in advance.