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Information Security Awareness. The Need for Information Security In Small Businesses In United States, small businesses make up 95% of all businesses.

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Presentation on theme: "Information Security Awareness. The Need for Information Security In Small Businesses In United States, small businesses make up 95% of all businesses."— Presentation transcript:

1 Information Security Awareness

2 The Need for Information Security In Small Businesses In United States, small businesses make up 95% of all businesses. These small businesses produce 50% of all the Gross National Products (GNP) and provide 50% of all new jobs in the country. All the large scale businesses employ people, technology and resources to make all activities secure. This leads cyber criminals to attack less secure small businesses. The average cost of informing a customer about a security breach that happened in your organization is well over $130. This means that if you have a client base of 1000 and a security breach takes place, you would end up in spending more than $1,30,000.

3 2008 CSI/FBI Computer Crime and Security Survey The most expensive computer security incidents are those involving financial fraud, with an average loss of $500,000. Frequency of occurrence : –Viruses49% –Insider abuse of the network 44% –Theft of laptops and mobile devices42%

4 The Problem of Network Security The Internet allows an attacker to attack from anywhere in the world from their home desk. They just need to find one vulnerability: a security analyst need to close every vulnerability. According to the top vulnerabilities available for a cyber criminal are –Web Browser –IM Clients –Web Applications –Excessive User Rights

5 Computer Virus A virus attaches itself to a program, file, or disk When the program is executed, the virus too is executed When the program is given away (floppy/ ) the virus spreads The virus may be benign or malignant but executes its load pay at some point (often upon contact) Viruses result in crashing of computers and loss of data. In order to recover/prevent virus attacks: –Security Firewalls i.e. Comodo –Re-install operating system –Virus Protection. Freeware i.e. Avast Antivirus, AVG Cough Cough! Don’t come close! Program A Extra Code Program A infects

6 Worm Independent program which replicates itself and sends copies from computer to computer across network connections. Upon arrival the worm may be activated to replicate.

7 Logic Bomb Trojan Horse Logic Bomb: Malware logic will execute upon certain conditions. It is used for more legitimate reasons but could be used for nefarious purposes. Software which will malfunction if maintenance fee is not paid Employee triggering a database erase when he is fired. Trojan Horse: Malware has malicious purpose in addition to functional purpose Social Engineering: “Try this game…it is so cool” –Game also s password file. –The word Trojan war has a piece of history attached to it. (In Greek mythology, the Trojan War was waged against the city of Troy by the Achaeans (Greeks) after Paris of Troy stole Helen from her husband Menelaus, the king of Sparta. ) –More importantly, a large horse was given as a gift/peace offering and allowed inside the gates of the fortress and once inside enemy soldiers exited and defeated them. The moral being that you should beware of gifts that look too good.

8 Phishing (Fake ) Phishing is portraying yourself as a trustworthy entity by an and asking for sensitive information such as SSN, credit card numbers, login IDs and passwords. Recent example that was in news : 10,000 Hotmail passwords revealed by a user on PasteBin. Believe it not, the password that was used the most was “123456” (a total of 64 times).

9 Pharming (Fake web pages)

10 Pharming : An Example The link provided in the leads to a fake webpage which collects all the important information and submits it to the owner.

11 Crackers Cracker: Computer-savvy programmer creates attack software Script Kiddies: Know how to execute programs Hacker Bulletin Board Sql Injection Buffer overflow Password Crackers Password Dictionaries Successful attacks! Crazyman broke into … CoolCat penetrated… Criminals: Create & sell bots -> spam Sell credit card numbers,… System Administrators Some scripts are useful to protect networks… Malware package=$1K-2K 1 M addresses = $8 10,000 PCs = $1000

12 Social Engineering This is John, the System Admin. What is your password? ABC Bank has noticed a problem with your account… I have come to repair your machine… and have some software patches What ethnicity are you? Your mother’s maiden name? Social engineering is the act of manipulating people into performing actions or divulging confidential information. While similar to a confidence trick or simple fraud, the term typically applies to trickery or deception for the purpose of information gathering, fraud, or computer system access.

13 How easy social engineering attacks are : An example

14 Hacking Networks War Driving: Can I find a wireless network? War Dialing: Can I find a modem to connect to? What IP addresses exist, and what ports are open on them? What versions of software are implemented on devices?

15 Man-In-The-Middle Attack Man in the middle attacks occur when an attacker pretends to be your final destination on the network. As in the figure, if a person is trying to connect to a specific web server, an attacker can mislead him to his computer, pretending to be that web server. MITM also result in spoofing.

16 Root Kit Upon penetrating a computer, a hacker installs a root kit May enable: –Easy entrance for the hacker (and others) –Keystroke logger Eliminates evidence of break-in Modifies the operating system Example : Sony BMG CD Protection scandal. Backdoor entry Keystroke Logger Hidden user

17 Password Cracking: Dictionary Attack & Brute Force PatternCalculationResultTime to Guess (2.6x10 18 /month) Personal Info: interests, relatives20Manual 5 minutes Social Engineering1Manual 2 minutes American Dictionary80,000< 1 second 4 chars: lower case alpha26 4 5x chars: lower case alpha26 8 2x chars: alpha52 8 5x chars: alphanumeric62 8 2x min. 8 chars alphanumeric x min. 8 chars: all keyboard95 8 7x hours 12 chars: alphanumeric x years 12 chars: alphanumeric x years 12 chars: all keyboard x chars: alphanumeric x10 28

18 Dictionary Attack & Brute Force : How easy it is!

19 Creating a Good Password Merry Christmas Bad Password Good Password Merry Xmas mErcHr2yOu MerryChrisToYou MerChr2You MerryJul MaryJul Mary*Jul,stuzc,sdJq46Sjqw (Keypad shift Right …. Up) (Abbreviate) (Lengthen) (convert vowels to numeric) M5rryXm1s MXemrays (Intertwine Letters) GladJesBirth (Synonym)

20 Creating A Good Password Combine 2 unrelated words Mail + phone = Abbreviate a phraseMy favorite color is blue= Mfciblue Music lyricHe was a scrawny calf, who looked rather woozy No one suspected he was packing an Uzi Cows with guns= Hwascwlrwnoshwpaucwg

21 Good Practices to Prevent Attacks

22 Security: Defense in Depth Defense in depth is a strategy to place multiple layers of defense on a system to address all the technical, personnel and operational issues. It is an approach conceived by NSA in order to ensure information and electronic security.

23 Protected Computer is… Computer fortified against attackers Applications turned off Operating system patched Security configuration tightened –Authorization –Authentication –Physical Access Using appropriate measures to stop malware, viruses, worms.

24 A Firewall is a Filter A firewall, as the name suggests acts as a wall between your computer/private network and the internet. There are all sorts of things on the internet that include malicious content. A firewall only lets “good” content to pass through and blocks the malicious code.

25 Attacking the Network The Internet Web Pages Private Network Border Router/Firewall Router/Firewall WLAN How could access control be improved?

26 Protecting the Network The Internet De-Militarized Zone Private Network Border Router: Packet Filter Bastion Hosts Proxy server firewall WLAN

27 Password Recommendations Change the default passwords on firewalls Never use ‘admin’ or ‘root’ or ‘administrator’ as a login for the admin –Use a software firewall on each computer system, with antivirus & antispyware. A good password is: –private: it is used and known by one person only –secret: it does not appear in clear text in any file or program or on a piece of paper pinned to the terminal –easily remembered: so there is no need to write it down –at least 8 characters –a mixture of at least 3 of the following: upper case letters, lower case letters, digits and punctuation –not guessable by any program in a reasonable time, for instance less than one week. Why you must change passwords Even if you choose a good password, it can still be discovered: someone may see you typing it or capture it by snooping on the computer or network. If you accidentally type your password in place your login name, it may appear in system log files

28 Patching/Updates Microsoft regularly issues patches or updates to solve security problems in their software. If these are not applied, it leaves your computer vulnerable to hackers. The Windows Update feature built into Windows 98, Me, NT, 2000, XP, Vista and Windows 7 can check your PC against a common database of patches More recent versions of windows have an Automatic Update feature

29 Combat Viruses Maintain Operating System Updates Install anti-virus, anti-spyware software There are many freeware and paid options available in the market. Beware of opening unknown attachments Do not open on your main server In case you are infected with a virus there are various options available : system restore, virus removal tool, re-install OS.

30 Wisconsin Data Breach Notification Law Restricted data includes: Social Security Number Driver’s license # or state ID # Financial account number (credit/debit) and access code/password DNA profile (Statute ) Biometric data National HIPAA protects: Health status, treatment, or payment

31 Combat Information Theft What information is valuable to you? Who has access to that information? Is your back-up: Recent? Off-site & Secure? Not with your System Administrator? Process Documented? Tested? Encrypted?

32 Recognizing a Break-in or Compromise Symptoms: Antivirus software detects a problem Pop-ups suddenly appear (may sell security software) Disk space disappears Files or transactions appear that should not be there System slows down to a crawl Stolen laptop (1 in 10 stolen in laptop lifetime) Often not recognized Problem: Many computer affected at once; all must be reloaded Law: Personally Identifiable Information disclosed: Must notify individual Accepted figures: –$200/record tangible cost –$6.3M per Breach (Ponemon Institute)

33 Security Audit Our Network Security Class will: Audit your server or network for security holes Talk to you about secure computer network policies Train your System Administrator Class expected to run Fall ’10


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