Introduction: Welcome to the enlightening presentation on "Safety and Online Awareness of Operation and Security of Digital Devices." This informative session was held at Chhayanaut Shangskriti-Bhavan, where we discussed crucial aspects related to the safe usage of digital devices and increasing awareness about online security. In this presentation, we will explore the potential risks associated with digital technologies and how to safeguard ourselves while navigating the vast online landscape. Let's delve into the essential concepts that promote a secure and responsible digital presence. Section 1: Understanding the Digital Landscape In this section, we take a closer look at the dynamic and evolving digital landscape. We discuss the significant growth of internet users worldwide and the increasing reliance on digital devices, such as computers, smartphones, tablets, and IoT devices. The benefits of technology are undeniable, but it's equally crucial to comprehend the potential threats lurking in the online world, including cyber-attacks, data breaches, and identity theft. Section 2: Recognizing Online Threats Here, we identify common online threats and their impact on individuals and organizations. Participants are educated on different types of cyber threats, such as malware, phishing, social engineering, and ransomware. We emphasize the importance of being vigilant and staying informed about the latest threats to protect ourselves effectively. Section 3: Strengthening Device Security This segment delves into best practices for securing digital devices. We discuss the significance of strong passwords, enabling two-factor authentication, keeping software up-to-date, and the use of reputable antivirus and security software. Practical tips are shared on securing smartphones and other mobile devices against theft or unauthorized access. Section 4: Safe Internet Practices In this part, we focus on safe internet practices to maintain privacy and security. We discuss the risks associated with oversharing personal information on social media and how to configure privacy settings effectively. Additionally, participants learn about safe browsing habits, avoiding suspicious websites, and using secure Wi-Fi connections. Section 5: Social Engineering and Phishing Awareness Social engineering is a deceptive technique used by cybercriminals to manipulate individuals into divulging sensitive information. We highlight common social engineering tactics and educate participants on how to recognize and avoid falling victim to these scams. We also emphasize the importance of being cautious while responding to emails, texts, or calls from unknown sources. Section 6: Responsible Use of Public Wi-Fi Public Wi-Fi networks can be convenient but are often unsecured, making users vulnerable to potential attacks.

1. ONLINE SEFTY AND AWARNESS
OF OPERATION AND SECURITY
OF DIGITAL DEVICES

2. MEHEDI HASAN
JOB EXPERIENCE: 16 YEAR
Adviser CCA foundation
LOGIK EYE FORENSICS

3. Indonesia
Malaysia
Vietnam
Singapore
India
Thailand
Nepal
China
Jakarta, Bali, Sumatra (3)
Kualalampur (2)
Ho chi min, Hanoi (2)
Singapore City (3)
Delhi, Agra, Kolkata, Chennai
Bangkok, Pataya, Puket
Kathmandu
Shanghai, Beijing
Sri Lanka Colombo

4. A Business man lives in
Dhaka. Used to social
media for business and
relation.
He receive a phone
call from an unknown
number.
Biggest cyber crime
involving privacy
invasion in the world!

5. CASE STUDY

6. WE CAN START NOW
CYBER CRIME

7. INTRODUCTION
Topic of the section Cyber
crime, Cyber Attacks,
Hacker, Hacking etc.
TYPES OF CYBER ATTACKS
Topic of the section,
Malware, Virus, Trojan,
Steps of hacking etc
IMPACT OF INTERNET
Topic of the section, Positive
and negative impact of
internet.
01
02
03
04
05
06
SOCILA ENGINEERING
ATTACKS
Steganography, Data hiding
technology, Encryption,
Decryption, Spoofing, etc
DIGITAL FORENSICs
ATTACKS
Evidence collection, Types of
forensics, different types
of technique, Anti-
Forensics, tips of analysis.
SECURITY AND SEFTY
Strong password, Device
security, Smartphone
security, malware
detecting, cleaning etc

8. HACKING: Unauthorized access in a system

9. জালিযালি এবং আলথিক অপরাধ
সাইবার সন্ত্রাস ও চাাঁদাবালজ, হযরালি ও হুমলক ধামলক
পিিগ্রাফী ধারি, সংরক্ষণ, লবিরি, সহাযিা
সাইবার যুদ্ধ
অিিাইি জুযা
অিিাইনি কাউনক আঘাি করা অপদস্থ করা
ফফক আইলি / ছদ্দনবশ ধারণ

10. Phishing Attack
Man-in-the-Middle Attack
SQL Injection Attack
Denial-of-Service, Brute-Force and Dictionary attacks
XSS Attacks
Ransomware Attacks
Malware Attack
Session Hijacking
Zero-Day - Attack

11. TYPE ATTACKS
WEB BASED
DEVICE BASED

12. WEB-BASED ATTACKS
INJECTION ATTACK
DENIAL OF SERVICE (DOS)
BRUTE FORCE
PHISHING ATTACKS

13. WEB-BASED ATTACKS

14. SYSTEM-BASED ATTACKS

15. CYBER ATTACKS AND CRIME

16. STEPS OF CYBER CRIME
STEP 1: IDENTIFY THE VICTIM
STEP 2: INFORMATION GATHERING.
STEP 3: IDENTIFY LOOPHOLE.
STEP 4: ACTUAL HACK.
STEP 5: ESCAPE WITHOUT TRACE.
Hacking into computer, is just like breaking into a house

17. WWW.ANONYMIZER.IN/FAKE-MAILER/
Email Spoofing is the art of sending a spoofed email from somebody else’s email account.

19. PHISHING ATTACKS
Phishing is the attempt to acquire sensitive
information, often for malicious reasons, by
masquerading as a trustworthy entity in an electronic
communication
PHISHING USING WEBSITE
SET (SOCIAL ENGINEERING TOOLKIT)
HTML/JAVA SCRIPT VIHSING
APK TERMUX

20. PHISHING ATTACKS
SET (SOCIAL ENGINEERING TOOLKIT)

21. PHISHING ATTACKS
Phishing java script code

22. PHISHING ATTACKS
www.virustotal.com

23. Viruses
Trojans
Rootkits
Worms
Spyware
Crimeware
Adware

24. MITM attack is a general term for when a perpetrator
positions himself in a conversation between a user and an
application—making it appear as if a normal exchange of
information is underway.
INTERCEPTOT

25. Hardware Keylogger

26. INVESTIGATIONS
FORCE STOP THE APPS
ROOT THE DEVICE
EXTRACT SYSTEM
https://youtu.be/ZF6dc6nt25U

27. USE UPDATED ANTIVIRUS
SCAN YOUR SYSTEM REGULARLY
SCAN FLASH MEDIA/DRIVE
BEFORE USE.

28. IMPACT OF INTERNET

29. IMPACT OF INTERNET
IMPACT OF INTERNET
NEGATIVE IMPACT
POSITIVE IMPACT

30. IMPACT OF INTERNET
লিন াসি
NEGATIVE IMPACT
লশশু পণিগ্রালফ
মাদনকর প্রসার িারী ও লশশু পাচার
শারীলরক গঠি ও মািলসক লবকানস অপলরপক্কিা
উগ্রবাদী মনিা াব ও গাঁজব
মািহালি ও মািহালিকর িথয প্রচার

31. IMPACT OF INTERNET
Addiction

32. IMPACT OF INTERNET
Personality

33. IMPACT OF INTERNET
িথয প্রালি ও সংরক্ষণ
POSITIVE IMPACT
ফযাগানযাগ
অিিাইি লশক্ষা
অিিাইি বযাবসা বালণনজযর প্রসার
অিিাইনি লচলকৎসা ফসবা
লশশু লশক্ষা ও লবনিাদি

34. SOCIAL ENGINEERING ATTACKS

35. Deepfake is an artificial intelligence-based human image
synthesis technique

36. • Mobile phones were used.

38. DIGITAL FORENSICs & INVESTIGATIONS

39. Forensics is the application of science to solve a
legal problem
Digital Forensics is a part of forensic science (in
relation to computer crime) focusing on the
recovery and investigation of material (essentially
data) found in digital devices.
In a word, It is recovery Science

40. DELETED FILES
LOGS
SPECIAL SYSTEM FILES (REGISTRY ETC.)
EMAIL ARCHVES, PRINTER SPOOLS
ADMINIRTRATIVE SETTING
INTERNET HISTORY
CHAT ARCHIVES
ENCRYPTED FIELS /PASSWORD PROTECTED
FILES

41. A talented young boy
of 14/15 years who was
studying late went out
of the house to take
the exam and left his
bag and notebook in a
nearby shop and
disappeared.
The boy's parents filed
a complaint with the
law enforcement
agencies.

42. ATTACKS
Deleted SMS recovery by forensics

43. General Forensic Investigations

44. JTAG Forensic Investigations

45. CHIP-OFF Forensic Investigations

46. GPS INVESTIGATION
https://myactivity.google.com/more-activity

47. GPS INVESTIGATION

48. GPS INVESTIGATION
https://www.google.com/maps/timeline?pb=!1m2!1m1!1s2018-06-22

49. ARTIFICIAL INTELLIGENCE
ChatGPT
ChatSonic
Bard
CoPilot
The New Bing (Bing AI)

50. Character Certificate
Statement of Certificate
40%
10%
2%
8%
10%
12%
2% 3%
8%
0%
5%
10%
15%
20%
25%
30%
35%
40%
45%
Character Chart
2019
This is to certify that
RAHIM son/daughter
of…YYYY…………is well
known to FACEBOOK
Ind. Since last
…2011….years and…..
month. To the best of our
knowledge and belief he/she
bearing following character.
Note : Pother pacali, রঙ্গমঞ্চ, গরুঠাকুর megh-Balika also known as Rahim that’s fake ID

51. ANTI FORENSICS

52. Anti forensics (sometimes counter
forensics) is a general term for a set
of techniques used as
countermeasures to forensic analysis.

53. DELETED FILES
LOGS
SPECIAL SYSTEM FILES (REGISTRY ETC.)

55. PASSWORD CHANGING POLICY.
DON’T USE SIMPLE PASSWORD. (APNI123, 123456, 098765, 0171300056,
APNI00056)
DON’T CLICK ON UN TRUSTED LINK.
SPOOFING EMAIL (LOTTERY, GIRLFRIEND/BOYFRIEND, JOB)
REMOVE UNKNOWN FRIEND SOCIAL MEDIA.
USE STRONG PASSWORD.
DO NOT GIVE YOUR DEVICE TO UN TRUSTED PEOPLE.

56. .
https://facebook.com/mehedi0001
+880-1973000056
Be with
someone who
will warning
you about
cyber attack