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Information Security
Fundamentals
David Veksler
Who is this talk for?
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Non IT experts
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Those working with confidential information
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Especially in parts of the world with high informational
security risks
Why should I care about
security?
•
Can’t I just hire someone and/or install software to
protect myself?
Why should I care about
security?
•
•
In most organizations, any IT administrator can
read and alter any other employees email
without any knowledge or record.
Mr Smith was an executive building a new manufacturing plant in
China. The support technicians in his IT department have
access to the corporate mail server. One of them was hired by a
competitor. Before he left, he logged on to the mail server and
downloaded the entire mail archive for Mr Smith, including the
design plans for the new assembly line. The company did not
discover about the leak until the competitor built their own
production line and release a competing product on the market.
Why should I care about
security?
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A tiny device with a build-in cellular modem can
act as a Trojan horse to open your network to
outsiders.
Widget Corp produces software for sale worldwide. A agent for
their competitors walked into one of their offices and installed a
plugbot (theplugbot.com). The plugbot was able to sniff a
domain password and send it over the built-in cellular modem.
From there, the attacker established remote access to the
corporate data server. A few months later, Widget Corp's
suddenly had a new competitor in the market.
Why should I care about
security?
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"It has become the Wild West on that other side of the globe.
There is little or no respect for Intellectual Property. Copyrights
and patents are ignored. Accounting issues have recently also
come into question for many Chinese companies that have
bought U.S. shell corporations to simplify the process of going
public in the West. Rough and tumble attitudes must be
expected. Any American company doing business in China must
anticipate the worst even as it hopes for the best in expanded
marketing opportunities."
http://www.forbes.com/sites/joanlappin/2011/09/21/americansuperconductor-destroyed-for-a-tiny-bribe/
Why should I care about
security?
•
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"In terms of outright theft of intellectual property, there is growing
evidence that China’s intelligence agencies are involved, as
attacks spread from hits on large technology companies to the
hacking of startups and even law firms. “The government can
basically put their hands in and take whatever they want,” says
Michael Wessel, who sits on the U.S.-China Economic and
Security Review Commission that reports to Congress. “We
need to take more actions and protect our intellectual property.”
Inside the Chinese Boom in Corporate Espionage
(http://www.businessweek.com/articles/2012-03-14/inside-thechinese-boom-in-corporate-espionage)
Why should I care about
security?
•
“There have been a large number of corporate spying cases
involving China recently… as the toll adds up, political
leaders and intelligence officials in the U.S. and Europe are
coming to a disturbing conclusion. “It’s the greatest transfer
of wealth in history,” General Keith Alexander, director of the
National Security Agency, said at a security conference at
New York’s Fordham University in January.”
Why should I care about
security?
•
“There have been a large number of corporate spying cases
involving China recently… as the toll adds up, political
leaders and intelligence officials in the U.S. and Europe are
coming to a disturbing conclusion. “It’s the greatest transfer
of wealth in history,” General Keith Alexander, director of the
National Security Agency, said at a security conference at
New York’s Fordham University in January.”
Contents
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Part 1: Secure web browsing
Part 2: Secure networks
Part 3: Secure email and IM
Part 4: Securing operating systems &
mobile devices
• Part 5: Securing organizations
• Conclusion: limitations of security
measures
Choosing a web browser
Why web browsers matter
Internet Explorer: upgrade to 9+ or switch to:
Chrome: recommended for personal use
Get HTTPS Everywhere & AdBlock
Firefox as a multi-tool
Plugging privacy leaks
Keep your browser up to date
Disable unused plugins
AdBlock: it’s not just for blocking ads
Block third party cookies
Using Private Mode
Cleaning your tracks with CC Cleaner
Securing your surfing
HTTPS Everywhere
OpenDNS/Google DNS
DNSCrypt
VPN (details later)
Advanced: monitoring web
traffic
Outgoing firewalls:
Zone Alarm (Windows)
Little Snitch (OS X)
Monitoring network traffic with Wireshark
Part 2: Secure Networks:
Virtual Private Networks
VPN options
PPTP: simple, supported by mobile devices, only
safe for personal use
L2TP: best for corporations: supports digital
certificates
Open VPN: free, open-source
Alternative VPN Solutions
LogMeIn Hamachi: simple ad-hoc and hub and
spoke VPN
SSH Tunneling
Browser helpers for VPNs
Proxy Switchy (Chrome)
Foxy Proxy (Firefox)
Proxy Scripting – works with Proxy Switchy when
configured in Chrome (IE)
Advanced: Running your
own proxy
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Why run a proxy locally?
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Optimize, secure, accelerate traffic
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Control access to outside network
Privoxy (recommended)
GlimmerBlocker (OS X)
Squid (Unix)
Polipo (Unix, Windows, OS X)
Part 3: Secure Email and
IM: Encryption Tools
Symmetric encryption
Asymmetric encryption
Secure Email
Corporate E-mail: Digital Certificates &
Signing
Get a free cert at http://startssl.com/
PGP: PGP Desktop ,GnuPG
Secure Instant Messaging
Corporate Instant Messaging:
Microsoft: Skype, Lynx, Office
Communication Server
Personal Instant Messaging
Off-The-Record plugin for:
Pidgin (Windows), Adium (OS X)
Part 4: Securing Operating
Systems: OS Hardening
Basic OS Hardening
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Secure your login mechanism
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Password protect access to your desktop
Admin privileges & user level accounts: run as a userlevel account; require password to login
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Disable file sharing on the network
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Enable automatic updates
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Disable unused user accounts
Anti-Virus Options
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Do you need Anti-Virus software?
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Anti-Virus for Individuals
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Windows Defender
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Avast
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Many free options
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F-Secure, Trend Micro Office Scan
Tip: Don't use Norton or McAfee!
Anti-Malware Options
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Do you need Anti-Malware software?
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Recommended Anti-Malware:
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Microsoft’s Windows Defender
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Spybot S&D (Free)
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Malware Bytes (Free/Pro)
Whole disk encryption
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What is it? Do you need it?
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True Crypt (multiplatform)
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Bitlocker (Windows)
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File Vault (Apple)
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PGP Whole Disk Encryption
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Symantec Endpoint Encryption
Advanced: Tips from the
Pros
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OS Hardening guides from the NSA
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Windows:
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OS X
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Security tips from the NSA for all OS’s
Advanced: OS Isolation
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Portable (Live) OS
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Portable apps
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Virtual Machines
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Only an “air gap” is safe for mission critical data!
OS Specific Considerations
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OpenBSD: when security is mission-critical
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Linux
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Windows Server 2008
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Windows XP
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Windows 7
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OS X
Securing your smartphone
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Notes on locking:
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Only protects against casual theft
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Cloud storage risks
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Remote wipes
Part 5: Secure
Organizations: physical
security, social engineering,
and other considerations
Physical security
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Human factors
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Physical security
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International travel
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Asset management & theft prevention
Social Engineering
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Inside threats
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Social engineering
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“Need to access” policies
Advanced: Threat discovery
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Process Explorer
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Rootkit detectors:
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Microsoft: Rootkit Revealer
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Avast: GMER
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RootkitHunter
Conclusion:
Limitations of Information
Security
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Limitations of software measures
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Limitations of hardware measures
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Cost vs. benefit of security measures
The End
Technologies mentioned in this
presentation have links to more
information – get a copy of the
PowerPoint from me
([email protected]).