Instructor
Greenfield Secondary School has about 1,200 students. The school recently introduced an online Student Management System where teachers enter students' scores, attendance records, and examination results.
Only teachers and authorized school administrators are supposed to access examination results.
One Monday morning, something strange happens.
The Vice Principal receives a message from a parent:
“Good morning sir. I checked my daughter's result yesterday and she had 72% in Mathematics. This morning, the result is showing 92%. Please can you confirm what happened?”
The Vice Principal checks the system.
The student's Mathematics score really has changed from 72% to 92%.
But that isn't the only problem.
When the examination officer checks the system, they discover that 23 other students' results have also been changed.
Some scores increased.
Some scores decreased.
Nobody knows who changed them.
The school calls the ICT teacher.
The ICT teacher checks the computer used by the examination officer.
Nothing looks unusual.
The computer has antivirus software.
There are no strange applications.
The examination officer insists:
“Nobody used my computer. I locked the computer before leaving yesterday.”
The ICT teacher then checks the school's system logs.
He discovers something interesting.
At 11:47 PM, someone logged into the examination system using the examination officer's account.
The school is confused.
The examination officer was already at home.
The ICT teacher asks the examination officer:
“Who knows your password?”
She replies:
“Nobody. It's private.”
But when asked what kind of password she uses, she says:
“It's easy to remember. It's my name and the year I started working here.”
The ICT teacher realizes that the password might not be very difficult to guess.
The ICT teacher checks the computer lab.
He discovers that one of the computers was left logged into the school's Wi-Fi network overnight.
The browsing history shows that someone visited the school's login page at 11:35 PM.
But the history doesn't show exactly who used the computer.
The next day, a student sends a message to the ICT teacher:
“Sir, I think I know something about the results.”
The student explains that a classmate had been telling other students:
“Don't worry about your Mathematics result. I know how to change it.”
Now the school has a much bigger problem.
You are the school's Junior Cybersecurity Investigation Team.
Your job is not to immediately accuse anyone.
Your job is to investigate what happened.
Discuss the following questions.
What do you think happened?
Was it:
What should the school do FIRST?
A. Delete the student's account
B. Change everyone's passwords immediately
C. Investigate the evidence
D. Shut down every computer in the school
E. Accuse the student who mentioned changing results
Choose your answer and explain WHY.
Imagine you wanted to gain access to the examination officer's account.
What weaknesses might you look for?
Think about:
Important: You are only identifying possible weaknesses. Do not attempt to access anyone's account.
Cybersecurity professionals often talk about three important goals:
Only authorized people should see information.
Information should not be changed without authorization.
Authorized people should be able to access the system when they need it.
Which part of the CIA Triad was clearly attacked when students' examination scores were changed?
Answer: __________
And explain why.
Your team has been asked to design 5 security rules for Greenfield Secondary School.
For example:
Rule 1: Students must never share their passwords.
Now create Rules 2–5.
Think about:
Just when the investigation appears to be finished, the ICT teacher discovers something else.
The login at 11:47 PM did NOT come from the school computer lab.
It came from an unknown device connected to the school's Wi-Fi network.
And the examination officer's password was used successfully.
But there is one more clue.
Earlier that week, the examination officer received an email saying:
“Your school account will be disabled in 24 hours. Click here to verify your account.”
She clicked the link and entered her username and password.
😱
What do you think happened?
Can you connect all the clues?
Imagine you are the Chief Cybersecurity Officer of Greenfield Secondary School.
You have ₦500,000 to improve the school's cybersecurity.
You can spend the money on things such as:
How would you spend the ₦500,000?
Prepare a short presentation explaining:
“Our school was attacked because ________. We will prevent it from happening again by ________.”
Divide the students into 4 teams:
Team 1 — Investigators 🔎
Find the likely cause of the incident.
Team 2 — Defenders 🛡️
Explain how the school could have prevented it.
Team 3 — Attack Analysis 🧠
Explain how the attacker may have obtained access, without actually performing an attack.
Team 4 — School Management 👔
Decide what the school should do after discovering the incident.
Give each team 15–20 minutes.
Then let each team present its findings.
“Cybersecurity is not just about computers. It is about protecting people, information, systems and trust.”
And one important rule they should remember:
🔐 Never test your cybersecurity skills on a real person's account, device, school system, or network without permission.
Student
A weak password
Student
Intergrity
Student
Wifi security
Student
Why was examination result changed
Student
Change everyone's password immediately
Student
Student
Question 2 investigate the evidence
Student
Passwords
Student
Password
Student
The availability triad:Because he must have secretly caught a teacher unlocking the system then he used a system that the school wont track so fast
Student
Question 1 ;A weak password
Student
p
Student
(ii) Suggest strong password
(iii)Do a double authentication
(iv)Create enough backups so that if one fails
(v)Know how to do about with your wifi passwords
Student
QUESTION 1: It was a weak password.
QUESTION 2: Investigate the evidence, why, because the parent of the student was shock and even school ICT officer himself was Bewildered.
QUESTION 3: The password.
Student
QUESTION :1 it was a weak password
QUESTION 2: Investigate the evidence why because the student and the vice principle were shock and the ICT director was confuse
QUESTION 3 the password
Student
1. A WEAK PASSWORD
2.B
3.password
Student
Question 1:Weak password
Question 2:Investigate the evidence, so the will find out who is really behind the act
Question 3:passwords
Question 4:I: Integrity, because the information was changed due to the access he gained from hacking the password
Question 5: Strong passwords, software updates, wi-fi security, reporting suspicious activity
Bonus Challenge: cybersecurity training, better wi-fi security, backup systems, anti-virus endpoint protection, computer upgrades.....
Student
more answers are still coming....
Student
1. A weak password
2. B and C
3. password
4. A- Availability
5. Backup
Student
5.Avaliability
6.strong password
Student
QUESTION ONE: A weak password.
QUESTION TWO: D: Shut down every computer in the school.
WHY? Because if the system remains on, the hacker can cause further damage to other students results.
QUESTION THREE: Passwords.
QUESTION FOUR: I- INTEGRITY. Information should not be changed without authorization. The students information, that is their results, were changed without the formal authorization of the examination officer.
QUESTION FIVE: 1) Use strong passwords. 2) think before you click 3) update your device 4) back up your data
QUESTION SIX: The hacker used phishing to get the officer's password. Then ,he used the password to access the school system to change the mathematics result for the students. password . RULE TWO: THINK BEFORE YOU CLICK. Cancel the result and make the affected students retake the exam. Then, change the officer's password to a more unpredictable or difficult one.
Student
more are coming later thank u for understanding
Student
Please sir more will be uploaded next time. Thank you
Student
QUESTION 1:it was a weak password
QUESTION 2:investigate the evidence why, because the student and the vice principal were shock and the ICT director was confused.
QUESTION 3:password
sir please i will continue from here later
Student
more incoming
Student
Question 1: A weak password
Question 2: shut down everybody computer, so that the person might not have access to it again.
Question 3: Password.
Question 4: Integrity, because the information should not be changed without authorization.
Question 5a: Use strong password: the password should not be a name but , number, alphanumeric, alphabet.
Question 5b: The password should be recorded in a safe and personal computer and should not be a simple passkey
Question 6: The school should stop all unauthorize link of password by using only local network.
Student
more are coming latter thank you.
Student
1. A WEAK PASSWORD
2.INVESTIGATE THE EVIDENCE, SO AS TO FIND OUT ACTUALLY WHAT THE STUDENT IS SAYING
3.PASSWORD
4. INTEGRITY
5. BACK UP YOUR DATA, SECURING NETWORK CONNECTION, UPDATING SOFTWARE REGULARLY
MORE COMING..........
Student
1. The person forced the teacher and she put in her details that is how the person hacked the acoount
2. The person may be part of the school
Student
Sir pls in our next class we can continue
byebye sir
Student
GOOD DAY SIR, PLEASE SIR. I WILL CONTINUE HERE TOMORROW..
THANK YOU SIR.
Student
I suggest to put storng password
Student
sir please more result are coming thank you sir
Instructor
Good afternoon everyone
Student
good afternoon sir
Student
I am currently on second course.
Student
GOOD AFTERNOON SIR
Instructor
Excellent work, everyone! 👏👏
I sincerely commend you all for your exceptional answers, thoughtful comments, and impressive contributions to the cybersecurity case scenario. Your responses demonstrate critical thinking, creativity, and a growing understanding of cybersecurity principles.
Keep asking questions, sharing ideas, and challenging yourselves to think like real cybersecurity professionals. I’m proud of your efforts, and I encourage you all to keep up the excellent work! 🔐💻
Let me hear from you guys today.
Student
thank you sir
Student
Good afternoon, sir
Student
good afternoon sir
Student
Alright sir thank you sir.
Student
GOOD DAY SIR, MY PROGREES LEVEL IS 33.33%
Student
Good day sir, please am starting from were I stopped
QUESTION NUMBER 6: The hacker used phishing to get the officer's password. Then ,he used the password to access the school system to change the mathematics result for the students. password . RULE TWO: THINK BEFORE YOU CLICK. Cancel the result and make the affected students retake the exam. Then, change the officer's password to a more unpredictable or difficult one.
Instructor
Weldone Etim.
Student
Thank you sir
Student
Sir please i have a problem in my account my account don't want to be open. this one i am using ,i just creat it new i have been trying since so i don't know what to do
Instructor
Ok. I will fix it from my end.
What is your full name?
Student
good day everyone , how are things going on
Student
Good day sir
Student
QUESTION 1: A weak password.
QUESTION 2: D: Shut down every computer in the school.
WHY? Because if the system remains on, the hacker can cause further damage to other students results.
QUESTION 3: Passwords.
QUESTION 4: I- INTEGRITY. Information should not be changed without authorization. The students information, that is their results, were changed without the formal authorization of the examination officer.
QUESTION 5: 1) Use strong passwords. 2) think before you click 3) update your device 4) back up your data
QUESTION 6: The hacker used phishing to get the officer's password. Then ,he used the password to access the school system to change the mathematics result for the students. password . RULE TWO: THINK BEFORE YOU CLICK. Cancel the result and make the affected students retake the exam. Then, change the officer's password to a more unpredictable or difficult one
Student
QUESTION ONE: weak password.
QUESTION TWO: D: Shut down every computer in the school.
WHY? Because if the system remains on, the hacker can cause further damage to other students results.
QUESTION THREE: Passwords.
QUESTION FOUR: I- INTEGRITY. Information should not be changed without authorization. The students information, that is their results, were changed without the formal authorization of the examination officer.
QUESTION FIVE: Use powerful passwords. 2: think before you click 3) update your device 4) back up your data
QUESTION SIX: The hacker used phishing to get the officer's password. Then ,he used the password to access the school system to change the mathematics result for the students. password . RULE TWO: THINK BEFORE YOU CLICK. Cancel the result and make the affected students retake the exam. Then, change the officer's password to a more unpredictable or difficult one.
Instructor
Hello Students.
I want to see your progress percentages
Student
Good afternoon sir
Student
Course Content
50.00% Done
Student
Course Content
66.67%
Student
WELL, I HAVE LEARNT A LOT ABOUT CYBER SECURITY,
I GUESS I WOULD BE ABLE TO PROTECT MYSELF ONLINE
MY PROGRESS LEVEL IS 66.67%
Student
After skipping videos you have not even watch one full video apart from the introduction to cybersecurity
Student
Hi everyone
Good day sir
Student
ARE YOU ME, AM I YOU , ARE WE US???
Student
As how now
Student
WELL PLEASE DO MIND HIM
HE IS TALKING FROM EXPERIENCE
Student
Dry dont watch your courses dey there dey brag mouth
Student
BECAUSE YOU NO GET MOUTH
Student
Hiii guys
Good day sir
Student
AS HOW TOO
Student
Dry
Student
AS HOW WHO ASKED YOU TO JOIN
Student
E BE LIKE SAY UNA DEY TAKE THIS LESSON AS GROUP CHAT OOOOOOOOOOOOOOOOOOOOOOOOOOOO
Student
SAINT MARLEY
YOU ARE STUPID
BY GODI SMART AND THERE IS NOTHING YOU CAN DO
Student
youre insulting your father in heaven
Student
CAPITAL LETTER SD DRY SD DRY SD SD SD SDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Student
as how?
Student
AS DRY AS YOUR FUTURE IS
Student
SIR MY PROGRESS LEVEL IS 50.00 THIS CYBERSECURITY IS MIND BLOWING AND INTEREST IT WOULD BE GOOD FOR MY CAREER I WILL PROTECT ONES ACCOUNT IDENTITY IMPORTANT DOCUMENTS AND HAVE MONEY I AM ENJOYING THIS ITS SPLENDID..
Student
QUESTION 1: It was a weak password.
QUESTION 2: Investigate the evidence, why, because the parent of the student was shock and even school ICT officer himself was Bewildered.
QUESTION 3: The password.
QUESTION 4: I- INTEGRITY. Information should not be changed without authorization. The students information, that is their results, were changed without the formal authorization of the examination officer.
QUESTION 5: 1) use strong password 2) think before you click 3) update your device 4) back up your data
QUESTION 6: The hacker used phishing to get the officer's password. Then ,he used the password to access the school system to change the mathematics result for the students. password . RULE TWO: THINK BEFORE YOU CLICK. Cancel the result and make the affected students retake the exam. Then, change the officer's password to a more unpredictable or difficult one.
Student
Good day sir
My progress level is 66.67%
Student
good afternoon sir. My progress is 33.33%
Student
Good afternoon sir my progress level is 33.33%.
Student
66.67%
Student
66.67%
Student
Course Content
66.67% DoneStudent
Afar , no be whatsapp group chat be this o. Make una respect unaself
Student
Good afternoon sir, my progress level is 33.33%
General Discussions
Lets dive into Microsoft Word
General Discussions
GOOD AFTERNOON SIR MY PROGRESS LEVEL IS 46.88.
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