10
CYBER CRIME & CYBER SECURITY
TRENDS IN AFRICA
Cyber Crime: Ransomware Increased 35
Percent in 2015
Cyber criminals are using encryption as a weapon to
hold companies’, governments and individuals’ critical
data hostage
The underground economy is booming and cyber crime is
growing fast across the globe and Africa is no exception. Africa
could be viewed as a permissive environment for cyber criminals
due to a lack of security capabilities, absence of relevant legislation and general lack of awareness of cyber security measures.
Cyber criminals are more professional and are much bolder, not
only in the targets they choose to go after, but also the sums of
money they seek. These criminal enterprises are for all intents
and purposes, look like fully-functioning businesses, covering
a multitude of areas, each with their own speciality. Just as
legitimate businesses have partners, associates, resellers, and
vendors, so do those enterprises operating in the shadows.
While blackmarket prices for email addresses have dropped in
recent years, credit card prices have remained relatively low but
stable.13 However, if they come with ‘luxury’ data – verification
that the seller’s accounts are still active or that a credit card
has not yet been blocked – they now fetch a premium price. At
the other end of the market, a drive-by download toolkit, which
includes updates and 24x7 support, can be rented for between
US$100 and US$700 per week, while distributed denial-of-service (DDoS) attacks can be ordered from US$10 to US$1,000 per
day. At the top of the market, a zero-day vulnerability can sell for
hundreds of thousands of dollars. And while there have been a
number of high-profile cyber crime arrests made by law enforcement over the last year, cyber criminals continue to evolve and
diversify their arsenal.
Ransomware has become increasingly dominant in recent
times and continues to evolve. Last year, we saw Crypto-ransomware (encrypting files) push the less damaging locker-style
ransomware (locking the computer screen) out of the picture.
Crypto-style ransomware grew 35 percent last year. An
extremely profitable type of attack, ransomware will continue to
ensnare PC users and expand to any network-connected device
that can be held hostage for a profit. In 2015, ransomware found
new targets and moved beyond its focus on PCs to smart phones,
Mac, and Linux systems. Symantec even demonstrated proof-ofconcept attacks against smart watches and televisions in 2015.14
Never before have people across the world been subjected to
extortion on such a massive scale as they are today. But why are
criminals favoring ransomware, especially crypto-ransomware?
With the glut of stolen information on the black market and the
introduction of the more secure EMV standard (chip-and-pin)
13
14
https://www.symantec.com/connect/blogs/underground-black-market-thrivingtrade-stolen-data-malware-and-attack-services
https://www.symantec.com/connect/blogs/how-my-tv-got-infectedransomware-and-what-you-can-learn-it
payment cards for card payments, the potential profit criminals
can gain by exploiting stolen credit card details has reduced.
Moreover, credit card fraud involves several people to conduct,
and consumer legislation ensures the victim’s financial loss is
minimized. In contrast, an attacker can obtain a ransomware
tool-kit from an underground source, and target their intended
victims, who may have few alternatives but to pay-up. There are
no middlemen for the criminal to pay and nothing to mitigate
the losses to the victim, thus maximizing the profits.
Growing Dominance of Crypto-Ransomware, Global
TT Percentage of new families of misleading apps, fake security software
(Fake AV), locker ransomware and crypto ransomware identified between
2005 and 2015.
Misleading Apps
FakeAV
Lockers
Crypto-Ransomware
100%
90
80
70
60
50
40
30
20
10
’05
’06
’07
’08
’09
’10
’11
’12
’13
’14
’15
Overall, 67% of South Africans have
experienced some form of online
crime — compared to 48% globally.
Norton Cyber Security Insights Report 2016