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1. Local banks have been hit by a wave of cyber-attacks, the South African Banking Risk Information Centre (Sabric), on behalf of the banking industry, said in a statement on Friday. The wave of ransomdriven Distributed Denial of Service (DDoS) attacks, targeting various services across multiple banks, started on Wednesday. A DDoS attack is an attempt by criminals to crash a website by overwhelming it with a flood of fake traffic or digital requests.  


2. “These attacks started with a ransom note which was delivered via email to both unattended as well as staff email addresses, all of which were publicly available. “Threat intelligence which has surfaced has revealed that this is a multi-jurisdictional attack with entities from several countries being targeted and should therefore not be viewed as a targeted attack on South African companies only.”  


3. The City of Johannesburg was hit by a similar attack on Thursday night, with a group calling themselves the Shadow Kill Hackers, demanding a ransom payment in bitcoin, Business Day reported.  In a tweet, the City said it had detected a network breach “which resulted in an unauthorised access to our information systems”.  The City shut down its website, e-services and billing system in reaction to the attack. 


4. “We must emphasise that DDoS attacks like this one do not involve hacking or a data breach and therefore no customer data is at risk. It does, however, involve increased traffic on networks necessary to access public facing services. This may cause minor disruptions,” Sabric said. “Robust defensive strategies have been invoked across the industry and we are confident that customer impact will be kept to a minimum.” “Despite our banks’ preparedness and resilience, we will continue to monitor this situation very closely and respond as required,” says Sabric acting CEO, Susan Potgieter. 


5. FNB did not answer specific questions but endorsed Sabric’s comments. Standard Bank similarly did not answer specific questions, but said an interruption to its banking services on Thursday had not been caused by “an external cyber event that reportedly impacted the provision of public e-services”. Capitec told Fin24 that although the bank sees “increased attempted criminal activity” around paydays every month, its systems can detect this kind of activity and were not affected. ABSA confirmed to Fin24 via email that it informed its customers on Wednesday that it experienced technical difficulties impacting its internet banking services for a brief period due to the DDoS attack, and not a hack.  


6. “We do experience adverse cyber incidents of some form or another on a regular basis, and these are dealt with in the normal course. To date, we have not experienced an instance where the bank’s own and customer information protection systems were breached,” ABSA said. “Our defensive strategies were invoked across our systems and networks, and customer impact was kept to a minimum. We continue to monitor and are responding in real-time as needed.”  


7. Nedbank CEO Mike Brown also confirmed to Fin24 that the bank and other members of the SA banking industry experienced the DDoS attack. “We must emphasise that DDoS attacks such as this one do not involve hacking or a data breach and therefore no customer data is at risk,” he said. “The attack had no impact on local clients who were able to access the bank’s websites and apps. “Clients accessing our sites from international locations may have experienced intermittent service due to the attack.  We continuously invest in our IT security to effectively deal with attacks of this nature and our working assumption is that they will continue across the industry,” Brown said.   



1. Using the case study above, provide one practical example of the following critical information security issues or CIA concepts (6 marks). 

i. Confidentiality 

ii. Integrity 

iii. Availability 

2. Using the case study above, discuss Denial of Service (DDoS) and Distributed Denial of Service (DDoS) attacks. In your discussion: 

a. Explain how attacks works. Provide a detailed answer using the case study as an example (10 marks). 

b. Explain the possible motives for the attack in the case study (4 marks). 

3. The attack referred to in the case study made headlines in South Africa. The studies show that many users of smartphones, social media and other online platforms are not aware of cyber security issues.  

Suppose that you have been given the opportunity to bring awareness and educate first-year students about cyber security in your college. 

Using examples to convince the first years, discuss what and how you would explain the importance of the three aspects of the social media account creation website in the diagram below. (14 marks) 


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