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  2. About error message 'We have found a virus on your attachment ...

    help.aol.com/articles/message-we-have-found-a...

    You may receive the message "We have found a virus on your attachment...Send your email again...ML0021" because the AOL email virus scan detected a virus on the file you’re attempting to send as an attachment. Once a file has been rejected by the AOL email service as containing a virus, it can’t be sent even if the virus is cleaned by a ...

  3. QR code - Wikipedia

    en.wikipedia.org/wiki/QR_code

    The QR code system was invented in 1994, at the Denso Wave automotive products company, in Japan. The initial alternating-square design presented by the team of researchers, headed by Masahiro Hara, was influenced by the black counters and the white counters played on a Go board; the pattern of position detection was found and determined by applying the least-used ratio (1:1:3:1:1) in black ...

  4. Error detection and correction - Wikipedia

    en.wikipedia.org/wiki/Error_detection_and_correction

    A checksum of a message is a modular arithmetic sum of message code words of a fixed word length (e.g., byte values). The sum may be negated by means of a ones'-complement operation prior to transmission to detect unintentional all-zero messages.

  5. Zeus (malware) - Wikipedia

    en.wikipedia.org/wiki/Zeus_(malware)

    Zeus (malware) Zeus is a Trojan horse malware package that runs on versions of Microsoft Windows. It is often used to steal banking information by man-in-the-browser keystroke logging and form grabbing. [1] Zeus is spread mainly through drive-by downloads and phishing schemes. First identified in July 2007 when it was used to steal information ...

  6. QR Codes Are Reshaping Public Transit, But Are They Safe? - AOL

    www.aol.com/qr-codes-reshaping-public-transit...

    October marks the 70th anniversary of the first bar code-type product. And the QR code — short for quick response — is an evolution on bar codes that are often used to point users to a ...

  7. Browser hijacking - Wikipedia

    en.wikipedia.org/wiki/Browser_hijacking

    One particular one changes the browser settings of Firefox, Chrome and Internet Explorer to show the website "istartsurf.com" as the homepage. It does so by changing registry settings and installing software which resets the settings if the user tries to change them.

  8. Cross-site request forgery - Wikipedia

    en.wikipedia.org/wiki/Cross-site_request_forgery

    Cross-site request forgery is an example of a confused deputy attack against a web browser because the web browser is tricked into submitting a forged request by a less privileged attacker. CSRF commonly has the following characteristics: It involves sites that rely on a user's identity. It exploits the site's trust in that identity.

  9. List of SIP response codes - Wikipedia

    en.wikipedia.org/wiki/List_of_SIP_response_codes

    Extended search being performed may take a significant time so a forking proxy must send a 100 Trying response. [1] : §21.1.1. 180 Ringing. Destination user agent received INVITE, and is alerting user of call. [1] : §21.1.2. 181 Call is Being Forwarded. Servers can optionally send this response to indicate a call is being forwarded. [1 ...