computer security seminar: protect your internet account information
DESCRIPTION
Slides from the Computer Security seminar presented by the Epiphany Technology Committee on 21 April 2014.TRANSCRIPT
Online Safety & Security
April-May 2014Epiphany Technology CommitteeJeff Squyres, Jim Cabral
Clickable links to additional information are included at the end
of this presentation
Agenda
● Why Should I Care About Security?● Who Is Attacking Me?● What Do I Need to Protect?● What Can Happen?● What Increases My Risk?● How Can I Protect Myself?● What If I Get Hacked?
Disclaimer
● We’re Just Trying to Help● Don’t blame us if things go bad● We’re volunteers (with day jobs)
Why Should I Care About Security?“Just like any other public environment, the Internet requires awareness and caution. Just as you use locks to keep criminals out of your home, you also need safeguards to secure your computer. Many of the crimes that occur in real life are now done - or
at least facilitated - through the Internet. Theft, abuse, and more can be and are being done online. Many scammers target older Americans via emails
and websites for charitable donations, dating services, auctions, health care, and prescription
medications.”US Department of Homeland Security.
The “Heartbleed” bug
The “Heartbleed” bug: Fun facts
● Only 38% of users have changed their passwords○ 6% have changed all○ 16% changed “some”○ 16% changed “a few”
The “Heartbleed” bug
● The Internet depends on encryption○ “https” → S = secure (encryption)○ Encryption between computers
Encrypted connection
The “Heartbleed” bug
● This encryption is known as “SSL”○ “Secure Sockets Layer”
SSL encrypted connection
The “Heartbleed” bug
● ⅔ of web sites use the same software for SSL○ OpenSSL
SSL encrypted connection OpenSSL
● Software bug in OpenSSL since March 2012
The “Heartbleed” bug
OpenSSL
● Software bug in OpenSSL since March 2012
The “Heartbleed” bug
OpenSSL
The “Heartbleed” bug
It’s like walking through a crowded restaurant with a video camera.
Joe Smith: your total is $98.17Here’s my
credit card
Please log me in; my username is “bobcat371”, my password is “LouCardsRule”You catch snippets of
conversations and images.
Most aren’t important.
But some are.
● Most web sites have fixed the problem○ It is now safe to go change all your
passwords
● You can’t know if your password was stolen○ (there was no way to track the guy
with the video camera)
The “Heartbleed” bug
Who Is Attacking Me?
Albert Gonzales: stole 170M credit / ATM cards from TJ Maxx
Who Is Attacking Me?
Nigerian (“419”) scammers
Also related:● Guaranteed loan/credit scams● Lottery scams● Overpayment / refund scams● Disaster relief scams● Travel scams● Tech/computer help scams
Who Is Attacking Me?
Dating, foreign bride, sex scams
Who Is Attacking Me?
State-sponsored
“I’m not important”
● “No one cares about my Facebook account…”
● Wrong○ They care a lot
“I’m not important”
● They’ll use the same username / password to login elsewhere
● They’ll impersonate you
What Do I Need to Protect?
What Can Happen?
Identity and Data Theft
Surveillance/Spying
Inappropriate Content
Source: http://feminspire.com/cyberbullying-a-new-age-in-teenagers-quest-for-power/
What Increases My Risk?
Poor Passwords
● Simple passwords● Old or reused
passwords● Lack of 2-factor
authentication
“Do I really need a different password on every web site?”
Yes(sorry)
“But I can’t remember all those passwords!”
● Use a password-keeper program● Two good ones:
○ LastPass○ DashLane
● Both are“Freemium”
Sidenote: What is 2-factor authentication?
1. Something you know○ Your password
2. Something you have○ Your cell phone
Sidenote: What is 2-factor authentication?
Login: bobcat371, LouCardsRule
Sidenote: What is 2-factor authentication?
Text bobcat371’s phone: code is 998321
This code changes every time
Sidenote: What is 2-factor authentication?
Text bobcat371’s phone: code is 998321
This code changes every time
What’s the code?
Sidenote: What is 2-factor authentication?
Text bobcat371’s phone: code is 998321
bobcat371, code is 998321
This code changes every time
Sidenote: What is 2-factor authentication?
You’re logged in!
Why is that useful?
Text bobcat371’s phone: code is 796537
Login: bobcat371, LouCardsRule
Why is that useful?
Text bobcat371’s phone: code is 796537
What’s the code?
Why is that useful?
Text bobcat371’s phone: code is 796537
Uh...
Why is that useful?
Text bobcat371’s phone: code is 796537
Uh...
Who supports 2-factor?
Who supports 2-factor?
These are only a few
Many more support 2-factor authentication
Check your favorite web sites to see if they support 2-factor authentication
Back to:What Increases My Risk?
Unpatched Software
● Windows and MacOS● Applications (PDF, Office)● Mobile phones, tablets● Web Servers
(Heartbleed)● Others (Java)
Insecure Configurations
● Software not set to auto-update
● Open home WiFi
“I’m not important”
● “No one cares about my home wifi network”
● WrongThey care a lot
Wifi reaches outside of your home
With protected wifi
Your home / wifiBad guy
can’t get in your network
With protected wifi
Your home / wifiBad guy connects
from the street -- he’s in your network!
Unprotected wifi
“Unprotected wifi is not only like leaving your front door unlocked; it’s like leaving it wide open with a ‘Welcome’ mat out front.”
How Can I Protect Myself?
Use Safe Online Behaviors
● Change ALL your passwords now○ Use complex, unique
passwords for each site● Avoid suspicious emails,
messages, websites and public WiFi○ If it’s too good to be true, it
probably is● Monitor your credit cards
Get Help to Setup Security
● Set phones, tablets and computers to auto update
● Back up critical information
● Encrypt your home WiFi (use WPA2)
Get Help to Setup Security
Get Help to Setup Security
Everyone’s setup is
different; we can’t help you in this seminar
Get personalor
professional help
What If I Get Hacked?
Good Response Better Response
Recap
● The internet is a dangerous place○ BUT IT IS
MANAGEABLE!○ Be sensible, be safe○ Stop. Think. Connect.
Recap
● You can take actions NOW to protect yourself○ Change ALL your passwords
■ Use good passwords■ Get a password keeper■ Setup 2-factor where possible
○ Ensure your firewall / anti-virus is up to date○ Upgrade away from Windows XP○ Set all your software to auto-update○ Protect your home wifi○ Setup off-site backups
Questions?
Helpful links● STOP. THINK. CONNECT.: From the Dept. of Homeland Security
○ http://stopthinkconnect.org● Malwarebytes: Handy PC software to remove viruses
○ A good second line of defense○ https://www.malwarebytes.org/
● Lastpass: Password keeper○ https://lastpass.com/ ○ They also run a Hearbleed checker: https://lastpass.com/heartbleed
● Free annual credit report: From the US government○ https://www.annualcreditreport.com/
● XKCD: Simple cartoon showing how Heartbleed works○ http://imgs.xkcd.com/comics/heartbleed_explanation.png
Helpful links● OpenDNS: Parental controls for filtering web sites at home
○ http://www.opendns.com/● Microsoft Family Safety:
○ https://familysafety.live.com/● Reporting Computer Crime:
○ http://www.justice.gov/criminal/cybercrime/reporting.html
Thank you!