Email link rewriting with verification of link destination

摘要

In some embodiments, techniques for computer security comprise receiving a first email, detecting a first link in the email, wherein the first link is associated with a first link destination, determining a second link associated with a second link destination, wherein the second link destination is associated with a predetermined address and with the first link destination, providing a second email, where the second email differs from the first email at least by having the first link rewritten with the second link, receiving an HTTP request for the second link destination, determining the first link destination from the second link destination, verifying that the first link destination is not suspicious, and enabling navigation to the first link destination.

主权项

1. A computer-implemented method, comprising:
receiving a first email; detecting a first link in the email, wherein the first link is associated with a first link destination; determining a second link, wherein the second link is associated with a second link destination, wherein the second link destination is associated with a predetermined address and with the first link destination, wherein the predetermined address is associated with a verification site, wherein the verification site enables navigation to the first link destination, subject to verification that the first link destination is not suspicious; rewriting the first link with the second link; providing a second email, where the second email differs from the first email at least by having the first link rewritten with the second link; receiving an HTTP request associated with the verification site, wherein the HTTP request is for the second link destination; determining the first link destination from the second link destination; verifying that the first link destination is not suspicious; and responsive to verifying that the first link destination is not suspicious, enabling navigation to the first link destination.