Rootkits are sneaky, but they are not impossible to detect. User mode rootkits can be detected by checking for modifications to files on disk. On Windows, important code libraries are digitally signed, so that any tampering would invalidate the digital signature and be detected. Another commonly employed technique is to periodically compute a cryptographic hash function for critical system components while the system is offline. This hash can be recomputed while the system is online, and if the hashes do not match, then a rootkit may be altering these files. In addition, kernel mode anti-rootkit software can detect code injection in system processes. If the cryptographic hashes do not match, then the rootkit violated which of the three primary security principles?

My favorite is "be concise."have you ever received an email and had to read a page full of information? by the time you finished reading it, you had to re-read it? i have even hit "reply" so that i could break it down into separate paragraphs and send it back to myself.what is concise? get to the point, fast. when opening an email like this, some will close it or print it to read later.i learned to use the subject line to prepare the reader for content. such as, "need on (blank), " "info only re: (blank)," "request input on (blank)," "read before (blank) meeting." these are just some.if you are asking for something, make that your first sentence. follow this by who, what, when, where, and how. use these, as necessary. example; (1) who (who needs it and or who does it), (2) what (specific description of what is needed), (3) when (specific, i need this by 8: 00 am monday or i need this by 10: 00 am today), (4) where (does it have to be printed and taken to someone, maybe the place of the meeting), (5) how (i need it scanned or faxed back to me at this email address, provide me with a hard copy).do not send yet. re-read it. did some spell check change a word? maybe let someone else read it for understanding. you want to avoid multiple emails asking for clarification. if important, put a read receipt on it. you will know it was opened, not necessarily read.end with a you.

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