Cyber-Security-20211013105857 (1).ppt

Cyber Security In
Day To Day Life
Dr. Saptadip Saha
Sytem Officer, High Court of Tripura
Attached to, District & Sessions Judge Court, Khowai
Empowerment of Citizens Through
Legal Awareness And Outreach

Which is the third largest economy?
• USA
• China
• ????

Importance of Cyber Security
“The only system which is truly secure is one which is
switched off and unplugged, locked in a titanium safe,
buried in a concrete bunker, and is surrounded by
nerve gas and very highly paid armed guards. Even
then, I wouldn’t stake my life on it.”
- Professor Gene Spafford
https://spaf.cerias.purdue.edu/
In security matters:
effectiveness & limitations
• There is nothing like absolute security
• We are only trying to build comfort levels, because security costs money and
lack of it costs much more
• Comfort level is a manifestation of efforts as well as a realization of their

Importance of Cyber Security
The Internet allows an attacker to work from anywhere on
the planet.
Risks caused by poor security knowledge and practice:
Identity Theft
Monetary Theft
Legal Ramifications (for yourself and your organization)
Sanctions or termination if policies are not followed
According to the SANS Institute, the top vectors for
vulnerabilities available to a cyber criminal are:
Web Browser
IM Clients
Web Applications
Excessive User Rights

Cyber Security
• Cyber security refers to the body of technologies,
processes, and practices designed to protect
networks, devices, programs, and data from attack,
damage, or unauthorized access.

Cyber Security
https://www.varonis.com/blog/data-breach-statistics/

Cyber Security is Safety
• Security:We must protect our computers and data in
the same way that we secure the doors to our homes.
• Safety: We must behave in ways that protect us
against risks and threats that come with technology.

What is a Secure System? (CIA Triad)
Availability
• Confidentiality – restrict
access to authorized
individuals
• Integrity – data has not
been altered in an
unauthorized manner
• Availability – information
can be accessed and
modified by authorized
individuals in an
appropriate timeframe

CIA Triad
Protecting
information
from
unauthorized
access and
disclosure
Example:
Criminal steals
customers’
usernames,
passwords, or credit
card information
Confidentiality

CIA Triad
Protecting
information
from
unauthorize
d
modificatio
n
Example:
Someone alters payroll
information or a
proposed product
design
Integrity

CIA Triad
Preventing
disruption
in how
information
is accessed
Example:
Your
customers
are unable to
access your
online
services
Availability

Threats and Vulnerabilities
What are we protecting our and our stakeholders
information from?
Threats: Any circumstances or events that can
potentially harm an information system by
destroying it, disclosing the information stored on
the system, adversely modifying data, or making
the system unavailable
Vulnerabilities: Weakness in an information system
or its components that could be exploited.

WHAT KINDS
OF THREATS
ARE THERE?
Phishing and
Spear- phishing
Attacks
Social Engineering Scams
Common Malware and
Ransomware
Business Email
Compromise
Fake websites that steal
data or infect devices
And much more

Phishing
Phishing refers to the practice of creating fake emails or SMS that appear to
come from someone you trust, such as: Bank, Credit Card Company, Popular
Websites
The email/SMS will ask you to “confirm your account details or your
vendor’s account details”, and then direct you to a website that looks just
like the real website, but whose sole purpose is for steal information.
Of course, if you enter your information, a cybercriminal could use it to
steal your identity and possible make fraudulent purchases with your
money.

Phishing Statistics
Verizon DBIR 2020: Phishing is the biggest cyber threat for
SMBs, accounting for 30% of SMB breaches
KnowBe4: 37.9% of Untrained Users Fail Phishing Tests
84% of SMBs are targeted by Phishing attacks
A new Phishing site launches every 20 seconds
74% of all Phishing websites use HTTPS
94% of Malware is delivered via email

Social Engineering
When attempting to steal information or a
person’s identity, a hacker will often try to
trick you into giving out sensitive information
rather than breaking into your computer.
Social Engineering can happen:
Over the phone
By text message
Instant message
Email

Malware = “malicious software”
Malware is any kind of unwanted software that is
installed without your consent on your computer
and other digital devices.
Viruses, Worms, Trojan horses, Bombs, Spyware,
Adware, Ransomware are subgroups of malware.
Malware

A virus tries to infect a carrier, which in turn
relies on the carrier to spread the virus around.
A computer virus is a program that can replicate
itself and spread from one computer to another.
Viruses

Direct infection: virus can infect files every time a user
opens that specific infected program, document or file.
Fast Infection: is when a virus infects any file that is
accessed by the program that is infected.
Slow infection: is when the virus infects any new or
modified program, file or document.
Great way to trick a antivirus program!
Sparse Infection: is the process of randomly infecting
files, etc. on the computer.
RAM-resident infection: is when the infection buries
itself in your Computer’s Random Access Memory.
Viruses cont.

Logic Bombs: is programming code that is designed to
execute or explode when a certain condition is
reached.
Most the time it goes off when a certain time is reached or a
program fails to execute. But it these bombs wait for a
triggered event to happen.
Most common use of this is in the financial/business world.
Most IT employees call this the disgruntled employee
syndrome.
Bombs

Trojan horse: is a program or software designed to look like a
useful or legitimate file.
Once the program is installed and opened it steals information or
deletes data.
Trojan horses compared to other types of malware is that it
usually runs only once and then is done functioning.
Some create back-door effects
Another distribution of Trojans is by infecting a server that hosts
websites.
Downfall of Trojans: very reliant on the user.
Trojans

Worms and viruses get interchanged commonly in the
media.
In reality a worm is more dangerous than a virus.
User Propagation vs. Self Propagation
Worm is designed to replicate itself and disperse
throughout the user’s network.
Email Worms and Internet Worms are the two most
common worm.
Worms

Email worm goes into a user’s contact/address book
and chooses every user in that contact list.
It then copies itself and puts itself into an attachment;
then the user will open the attachment and the process
will start over again!
Example: I LOVE YOU WORM
Email Worm

An Internet Worm is designed to be conspicuous to the
user.
The worms scans the computer for open internet ports
that the worm can download itself into the computer.
Once inside the computer the worms scans the
internet to infect more computers.
Internet Worms

Zombie & Botnet
Secretly takes over another networked computer
by exploiting software flows
Builds the compromised computers into a zombie
network or botnet
a collection of compromised machines running
programs, usually referred to as worms, Trojan horses,
or backdoors, under a common command and control
infrastructure.
Uses it to indirectly launch attacks
E.g., DDoS, phishing, spamming, cracking

Adware is a type of malware designed to display
advertisements in the user’s software.
They can be designed to be harmless or harmful; the adware
gathers information on what the user searches the World Wide
Web for.
With this gathered information it displays ads corresponding to
information collected.
Spyware is like adware it spies on the user to see what
information it can collect off the user’s computer to display pop
ads on the user’s computer.
Spyware unlike adware likes to use memory from programs
running in the background of the computer to keep close watch
on the user.
This most often clogs up the computer causing the program or
computer to slow down and become un-functional.
Adware and Spyware

Identity Theft
Impersonation by private information
Thief can ‘become’ the victim
Reported incidents rising
Methods of stealing information
Shoulder surfing
Snagging
Dumpster diving
Social engineering
High-tech methods
Identity Theft

Loss of privacy
Personal information is stored electronically
Purchases are stored in a database
Data is sold to other companies
Public records on the Internet
Internet use is monitored and logged
None of these techniques are illegal
Identity Theft

Ransomware
Ransomware is a type of
malware that restricts your
access to systems and files,
typically by encryption and then
demands a ransom to restore
access.
Often, systems are infected by
ransomware through a link in a
malicious email. When the user
clicks the link, the ransomware
is downloaded to the user’s
computer, smartphone or other
device. Ransomware may spread
through connected networks.

Ransomware
Top Ransomware Vulnerabilities:
• RDP or Virtual Desktop endpoints without MFA
• Citrix ADC systems affected by CVE-2019-19781
• Pulse Secure VPN systems affected by CVE-2019-11510
• Microsoft SharePoint servers affected by CVE-2019-0604
• Microsoft Exchange servers affected by CVE-2020-0688
• Zoho ManageEngine systems affected by CVE-2020-10189
https://www.microsoft.com/security/blog/2020/04/28/ransomware-groups-continue-to-target-healthcare-
critical-services-heres-how-to-reduce-risk/

Ransomware Controls
Weapons-Grade Data Backups
Religious Patch Management
Plan to Fail Well (Incident Response Plan)
Know who to call!
Training and Testing Your People
Don’t Open that Email Link/Attachment

Business/Official Email Compromise
BEC is a big problem for you and your organization:
Your email is compromised.
Another employee of your organization is compromised
Almost always, these emails fall into 2 categories:
1. Downloading and spreading additional malware
automatically
2. Urging the customer to perform a financial
transaction immediately
Tips and Tricks to share with customers:
BEC made up half of cyber-crime losses in 2019; $75K
per scam
Standard phishing email awareness – don’t click links
or download attachments
Pay attention to the email address
Enable MFA for business email accounts

COVID-19 Cyber Threats
• Google: 18+ Million COVID-19 emails in just the one
week, in addition to 240M daily COVID-19 spam
messages
• Phishing up 667% right now
• FBI IC3: 4x complaints per day (1K before COVID-19, now
3k-4k per day)
• 148% spike in ransomware attacks due to COVID-19
• 30%-40% increase in attacker interest relating to RDP (as
measured by Shodan)
• 26% increase in e-comm web skimming in March
• Healthcare, Financial Services, Medical Suppliers and
Manufacturing, Government and Media Outlets all seeing
a large increase in cyber threats

Cyber Crime
Cyber Crime is a generic term that refers to all criminal
activities done using the medium of communication
devices, computers, mobile phones, tablets etc. It can be
categorized in three ways:
•The computer as a target – attacking the computers of
others.
•The computer as a weapon- Using a computer to commit
“traditional crime” that we see in the physical world.
•The computer as an accessory- Using a computer as a
“fancy filing cabinet” to store illegal or stolen information.

How do you look like to Bad guys?
66.233.160.64

Financial (theft,
fraud, blackmail)
Political/State (state
level/military)
Fame/Kudos
(fun/status)
Hacktivism (cause)
Pen Testers (legal
hacking)
Police
Insider
Hacking
Business

System Hacking
system.
System hacking is a vast subject that
consists of hacking the different software-
based technological systems such as laptops,
desktops, etc.
System hacking is defined as the
compromise of computer systems and
software to access the target computer
and steal or misuse their sensitive
information.
Here the malicious hacker exploits the
weaknesses in a computer system or
network to gain unauthorized access to its
data or take illegal advantage.
Hackers generally use viruses, malware,
Trojans, worms, phishing techniques, email
spamming, social engineering, exploit
operating system vulnerabilities, or port
vulnerabilities to access any victim's

Global Cyber Security Trends – The next wave
Recent studies reveal three major findings:
•Growing threat to national security - web espionage becomes
increasingly advanced, moving from curiosity to well-funded and
well-organized operations aimed at not only financial, but also
political or technical gain
•Increasing threat to online services – affecting individuals and
industry because of growth of sophistication of attack techniques
•Emergence of a sophisticated market for software flaws –
that can be used to carry out espionage and attacks on Govt.
and Critical information infrastructure. Findings indicate a blurred
line between legal and illegal sales of software vulnerabilities
Mischievous activities in cyber space have expanded from
novice geeks to organized criminal gangs that are going Hi-
tech

Attacks today are AUTOMATED!
It’s not some dude sitting at his hacker desk all day typing out
ping commands to IP addresses via the command prompt
manually…

What does a Cyber Security Professional look like?

Eugene Kaspersky, CEO Kaspersky Labs, £1.1bn
James Lyne, CTO, SANS
David Ulevitch, Founder OpenDNS Katie Moussouris, Microsoft Bug Bounty creator
Dr Laura Toogood, MD Digitalis Reputation
8
Erin Jacobs, CSO at UCB Financial Services
In reality…

How We Protect Information?
People
Training, education, awareness, repetition
Process
Governance, oversight, policy, reporting
Technology
Firewalls, IDS/ISP
, SIEM, anti-malware
Strong passwords, Logging/monitoring
Which is the weakest link?

Social Engineering Best Practices
USE YOUR SECURITY SPIDER SENSE!
ALWAYS validate requests for
information if you’re not 100000%
sure
Call a number YOU know
Google it…
ALWAYS ASK QUESTIONS!
Is this who I think it is FOR SURE?
Did someone mention this to me
personally, or was it discussed at a staff
meeting?
Is this the FIRST I’m hearing about this?

BEC Best Practices
Think through Out of Office emailresponders
Avoid using free web-based email for business
Not only less-professional, but easier to hack,
typosquat, or spoof
Domains and email addresses are cheap, especially
compared to BEC
Register similar domains to yours to prevent
typosquatting e.g. delaplex.com vs. delapelx.com
Be careful about the information you share on
your website or Social Media (LinkedIn, Facebook)
about job duties or positions, especially for
positions with transactional or purchasing authority

Sun Tzu on the Art of War
If you know the enemy and
know yourself, you need not
fear the result of a hundred
battles.
If you know yourself but not
the enemy, for every victory
gained you will also suffer a
defeat.
If you know neither the enemy
nor yourself, you will succumb
in every battle.

WHAT IS FOOTPRINTING?
Definition: the gathering of information
about a potential system or network (the
fine art of gathering target information)
a.k.a. fingerprinting
Attacker’s point of view
Identify potential target systems
Identify which types of attacks may be useful
on target systems
Defender’s point of view
Know available tools
May be able to tell if system is being
footprinted, be more prepared for possible
attack
Vulnerability analysis: know what
information you’re giving away, what
weaknesses you have

WHAT IS FOOTPRINTING?
System (Local or Remote)
IP Address, Name and Domain
Operating System
Type (Windows, Linux, Solaris,
Mac)
Version (XP/Vista/7/10,
Redhat, Fedora, SuSe, Ubuntu,
OS X)
Usernames (and their
passwords)
File structure
Open Ports (what
services/programs are running
on the system)
Networks / Enterprises
System information for all
hosts
Network topology
Gateways
Firewalls
Overall topology
Network traffic information
Specialized servers
Web, Database, FTP, Email,
etc.
Social Media

Vulnerability Scanner
Functions of Vulnerability Scanner are far different
from firewall or intrusion detection system.
Vulnerability scanning tools helps you in protecting
your organization from any kind of security risks or
threats by scanning with deep inspection of
endpoints to ensure that they are configured securely
and correctly.
The prime aim of running a vulnerability scanner is to
identify the devices that are open for vulnerabilities.

Types of Vulnerability Scanner
Port scanner
Network vulnerability scanner
Web application security scanner
Database security scanner.
Host based vulnerability scanner
ERP security scanner.
Single vulnerability tests.

Virus Detection
• Simple Anti-virus Scanners
– Look for signatures (fragments of known virus code)
– Heuristics for recognizing code associated with viruses
• Example: polymorphic viruses often use decryption loops
– Integrity checking to detect file modifications
– Keep track of file sizes, checksums, keyed HMACs of contents
• Generic decryption and emulation
– Emulate CPU execution for a few hundred instructions, recognize
known virus body after it has been decrypted
– Does not work very well against viruses with mutating bodies and
viruses
not located near beginning of infected executable

Cyber Security and Privacy Starts and
Ends with Us!
Security Tips
Commit to a disciplined practice of information
security and continue to refresh yourself so you
don’t become a point of vulnerability in our
security defenses.

Summary
• Cybersecurity will require a
significant workforce with
deep domain knowledge.
• Almost everything is hooked
up to the internet in some
sort of form.
• Recent events have
widened the eyes of many
security experts.
• The ability to gain access to
high security organizations,
infrastructures or
mainframes has frightened
many people.
• Could one click of the
mouse start World War III?

Some day to day life cyber scams
Facebook Fake Account

OLX

Nudity in Video Call

Fake Whatsapp messages Scam

Fake Mobile Tower Installation Scam

Cyber-Security-20211013105857 (1).ppt

Cyber-Security-20211013105857 (1).ppt

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