public:emai:spam

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public:emai:spam [2021-10-26 09:58] – veselypublic:emai:spam [2021-11-19 08:12] – vesely
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   - Do not belive the sender's identity until you really verify it (check sender’s email address closely).   - Do not belive the sender's identity until you really verify it (check sender’s email address closely).
  
-  * Better safe, than sorry. \\+  * Better safe, than sorry.
   * Be brave! Never try to conceal your possible mistake - take it in possitive way - we all learn from mistakes. We all :-)   * Be brave! Never try to conceal your possible mistake - take it in possitive way - we all learn from mistakes. We all :-)
   * Cowards who awkwardly try to avoid of mistake revealing usualy make things much worse for them and for the rest of the institution.   * Cowards who awkwardly try to avoid of mistake revealing usualy make things much worse for them and for the rest of the institution.
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 ---- ----
  
-See also "**[[:public:emai:malware|Dealing with malware, spam, suspicious content]]**" in separated CERGE-EI Wiki article (details about security measures applied to incoming emails)+<faicon fa fa-hand-o-right> See also "**[[:public:emai:malware|Dealing with malware, spam, suspicious content]]**" in separated CERGE-EI Wiki article (details about security measures applied to incoming emails)
  
-and **[[:public:emai:spam_chain|"Spam fiters at CERGE-EI"]]**  (describing chain of email filters for incoming traffic)+<faicon fa fa-hand-o-right> and **[[:public:emai:spam_chain|"Spam fiters at CERGE-EI"]]**  (describing chain of email filters for incoming traffic)
  
 ---- ----
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 === spam === === spam ===
 +<code>
 +
 +[Classification: POTENTIALY DANGEROUS]
 +
 +</code>
  
   * Unsolicited mail, just offers unneeded or annoying things.   * Unsolicited mail, just offers unneeded or annoying things.
Line 37: Line 42:
  
 === hoax === === hoax ===
 +
 +<code>
 +[Classification: ANNOYING]
 +
 +</code>
  
   * By wiki: A hoax is a falsehood deliberately fabricated to masquerade as the truth.   * By wiki: A hoax is a falsehood deliberately fabricated to masquerade as the truth.
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 === phishing === === phishing ===
 +
 +<code>
 +[Classification: PRETTY DANGEROUS]
 +
 +</code>
  
   * Ask for confidential and private information, often by using fraudulent webpage, masking the request as an account renew etc. Make __time pressure__  and __urgency illusion__.   * Ask for confidential and private information, often by using fraudulent webpage, masking the request as an account renew etc. Make __time pressure__  and __urgency illusion__.
Line 49: Line 64:
  
 === spoofing === === spoofing ===
 +
 +<code>
 +[Classification: DANGEROUS]
 +
 +</code>
  
   * The message looks like sent from a trustworthy address, your jobmate, manager, IT crowd, your home institution server etc.   * The message looks like sent from a trustworthy address, your jobmate, manager, IT crowd, your home institution server etc.
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 === malware === === malware ===
 +
 +<code>
 +[Classification: DANGEROUS]
 +
 +</code>
  
   * The harmful code hidden in an executable attachment or in a document as a macro or on the fraudulent webpage linked from the message.   * The harmful code hidden in an executable attachment or in a document as a macro or on the fraudulent webpage linked from the message.
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 === ransomware === === ransomware ===
 +
 +<code>
 +[Classification: THE MOST DANGEROUS]
 +
 +</code>
  
   * Special malware __encrypting every data__  you can access and asking ransom. The process of encrypting could be long term so backups could be affected too.   * Special malware __encrypting every data__  you can access and asking ransom. The process of encrypting could be long term so backups could be affected too.
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 ==== What to do, if you are uncertain about email (possible cyber attack) ==== ==== What to do, if you are uncertain about email (possible cyber attack) ====
  
-  - Thing first, check all circumstances, ask in doubt (IT, colleagues, sender,...).+  - Thing first, check all circumstances, ask in doubt (IT, colleagues, sender,…).
   - Do not allow the time presure effect, think twice. postpone the action (back to step 1 eventually :-)   - Do not allow the time presure effect, think twice. postpone the action (back to step 1 eventually :-)
   - Only if you are absolutely sure, continue with an action suggested in email (settings review, password change etc.)   - Only if you are absolutely sure, continue with an action suggested in email (settings review, password change etc.)
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  • Last modified: 2022-12-02 10:04
  • by vesely