How to enable Undo Send in Gmail

If you make a typo or regret sending a message, you can undo the action by enabling "Undo send." This setting gives
you the option to take back a message you just sent.
To enable Undo Send:
1. Click the gear in the top right .
2. Select Settings .
3. Scroll down to "Undo Send" and click Enable .
4. Set the cancellation period (the amount of time you have to decide if you want to unsend an email).
5. Click Save Changes at the bottom of the page.
If you had Undo Send turned on in Gmail Labs, your Undo Send setting will be on by default.

Google support

Cleanup your devices

More often than not, we collect lots of rubbish on our devices because of their shiny nature, you know, download everything with nice titles: 'how to be a successful manager', 'learn to program the easy way', 'team building tips', 'how to have better....', and others of the snake oil genre. Within a few months we have collected so much clatter-and we haven't gotten round to reading them.
So,  this week:
1. Check your device(home folder, documents folder, the root of your drives, etc) for clatter and delete anything you haven't read in 1 to 2 years and more-and will never read. It probably isn't relevant anymore.
2. Categorize your files and store them in folders. This makes it easy to find, and also to spot anything lurking in the dark, as you go through the your storage areas.
3. Uninstall all shiny programs you once thought you needed but never use. This is important since you definitely don't even patch or upgrade such programs, which is a huge security risk
4. Cleanup your mailbox. Setup automatic archiving, probably 60 days, or according to your needs. Don't keep a loaded inbox-you will never read all those mails. Delete most of them.
5. Backup your important data. Please note that this should have been the first step, as after making these changes, you might come back and find you lost something important. Perhaps make 2 backups, one before, and one after the cleanup. Keep them separate.
6. When did you last change your password and PIN codes? Yes, am looking at you. Update your password. Choose something strong. The best passwords are those you can't remember, so use a good password manager if you can(LastPass, 1Password, Password Safe, etc)

Have you backed up your data today?
Youre welcome.

Safety tip #2

Always lock your desktop when you leave your workstation. somebody might watch your porn. Also enable password for your screen saver.

Safety tip #1

Do not connect to the internet while logged in as administrator. Read email in plain text (not HTML), don't follow links in emails from untrusted sources(and some trusted ones), run a personal firewall, and eat fruits and vegetables only for at least two days a week.

CVE-2014-0160: Heartbleed

CVE-2014-0160: The (1) TLS and (2) DTLS implementations in OpenSSL 1.0.1 before 1.0.1g do not properly handle Heartbeat Extension packets, which allows remote attackers to obtain sensitive information from process memory via crafted packets that trigger a buffer over-read, as demonstrated by reading private keys, related to d1_both.c and t1_lib.c, aka the Heartbleed bug.

As per their advisory:
“Only 1.0.1 and 1.0.2-beta releases of OpenSSL are affected including 1.0.1f and 1.0.2-beta1.”

Any other versions of OpenSSL are NOT affected by this bug. If you compiled your applications with any of these versions, then you may be affected.

You can check if you server is affected by the vulnerability here