Showing posts with label security. Show all posts
Showing posts with label security. Show all posts

Sunday, October 3, 2021

Validate integrity of LibreOffice downloaded files on Mac

On this page https://www.libreoffice.org/download/download/, click info
https://download.documentfoundation.org/libreoffice/stable/7.2.1/mac/x86_64/LibreOffice_7.2.1_MacOS_x86-64.dmg.mirrorlist

Mirrors for LibreOffice_7.2.1_MacOS_x86-64.dmg
File information

Filename: LibreOffice_7.2.1_MacOS_x86-64.dmg
Path: /libreoffice/stable/7.2.1/mac/x86_64/LibreOffice_7.2.1_MacOS_x86-64.dmg
Size: 267M (279867887 bytes)
Last modified: Fri, 10 Sep 2021 09:43:36 GMT (Unix time: 1631267016)
SHA-256 Hash: b83e841360fa6ee9e42bfc1579ce9ae135972d6e7a01e79d1b975c2b855ff152
SHA-1 Hash: ad46a513f7c2047f632d8a3929a23b74aaebcc3d
MD5 Hash: 741cd9f35e133d0b2cc1944dc362cb0f
BitTorrent Information Hash: bcb717c49259229b9108c0967679dc2f53c9aba9
PGP signature available

At the terminal:
$ openssl dgst -sha256 LibreOffice_7.2.1_MacOS_x86-64.dmg
SHA256(LibreOffice_7.2.1_MacOS_x86-64.dmg)= b83e841360fa6ee9e42bfc1579ce9ae135972d6e7a01e79d1b975c2b855ff152

Search and compare the hash sum match before install

Tuesday, January 1, 2013

New Year New Password

Your password should change frequently. If you cannot change every month, every quarter, then at least once a year.

When you change the password, it should NOT in "The 25 worst passwords of 2012". You should NOT using the same password for all accounts. Use the KeePass or a password protected LibreOffice document to keep track your password. Read "The guide to password security (and why you should care)" for more info.

Happy New Year!

Saturday, December 22, 2012

Beware of Fake Federal Express Emails

When I maintained my client's computer few days ago, I found his computer infected by trojan downloader Win32/Kuluoz.B


These trojans infected my client's computer since he clicked on the fake email claimed from Federal Express.


As a matter of fact, the delivery companies like Federal Express, UPS, DHL and US Post Office never send email notification. They don't know your email. If they cannot delivery package, they will left a note at your door.

It took me an hour to clean up and re-scan whole computer to make sure it clean. So, beware when you check email.