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Understanding UAC prompt/ alert usefulness
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<blockquote data-quote="Andy Ful" data-source="post: 967680" data-attributes="member: 32260"><p>Technically, UAC warns the user when the process wants to get higher than standard privileges, and if allowed, the process runs without changing the user context.</p><p>Let's assume that you have a default admin account ("King" user) and SUA ("Alice" user).</p><p>So if you started the process with standard rights as "King" and accepted UAC prompt, then the process will run with high privileges also as "King".</p><p></p><p>The above is not possible on SUA, because this account cannot host the processes running with higher privileges. If you will start the process from SUA as "Alice", you will see the prompt for Administrator credentials ("King" user credentials). After inserting the credentials, the process will run as "King" with high privileges even when the process window still runs on the "Alice" desktop with standard privileges.</p><p></p><p></p><p></p><p>It can be useful if you are not a happy-clicker. Most administrative processes and scheduled tasks do not run on SUA but silently run on administrative accounts.</p><p></p><p></p><p></p><p>No.</p><p></p><p></p><p></p><p>If you do it on SUA then you can rarely see the UAC prompt, mostly when one of your applications needs high privileges to auto-update. So, you can safely choose to cancel. This choice will not cause any harm. It is also good to look at the details about which process wants to elevate, and there is no need to hurry with allowing elevation.</p><p></p><p></p><p></p><p>This is not necessary. If you are busy doing something then simply choose to cancel the UAC prompt. You can note the process that wants to elevate and take a closer look at this later.</p><p></p><p></p><p></p><p>UAC set to MAX, will prevent most UAC bypasses. So, most malware will not be able to get high privileges silently. Many malware samples will try to do it, and then you will be alarmed about possible infection. If you use a popular web browser and do not use applications that frequently update, then you will see the UAC prompt rarely. The applications from Microsoft Store can auto-update without UAC prompt.</p></blockquote><p></p>
[QUOTE="Andy Ful, post: 967680, member: 32260"] Technically, UAC warns the user when the process wants to get higher than standard privileges, and if allowed, the process runs without changing the user context. Let's assume that you have a default admin account ("King" user) and SUA ("Alice" user). So if you started the process with standard rights as "King" and accepted UAC prompt, then the process will run with high privileges also as "King". The above is not possible on SUA, because this account cannot host the processes running with higher privileges. If you will start the process from SUA as "Alice", you will see the prompt for Administrator credentials ("King" user credentials). After inserting the credentials, the process will run as "King" with high privileges even when the process window still runs on the "Alice" desktop with standard privileges. It can be useful if you are not a happy-clicker. Most administrative processes and scheduled tasks do not run on SUA but silently run on administrative accounts. No. If you do it on SUA then you can rarely see the UAC prompt, mostly when one of your applications needs high privileges to auto-update. So, you can safely choose to cancel. This choice will not cause any harm. It is also good to look at the details about which process wants to elevate, and there is no need to hurry with allowing elevation. This is not necessary. If you are busy doing something then simply choose to cancel the UAC prompt. You can note the process that wants to elevate and take a closer look at this later. UAC set to MAX, will prevent most UAC bypasses. So, most malware will not be able to get high privileges silently. Many malware samples will try to do it, and then you will be alarmed about possible infection. If you use a popular web browser and do not use applications that frequently update, then you will see the UAC prompt rarely. The applications from Microsoft Store can auto-update without UAC prompt. [/QUOTE]
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