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Introduction to DDOS Attacks
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In computing terms, a DoS (Denial of Service) or a DDOS (Distributed
Denial of Service) attack consists of efforts to interrupt a certain
network resource’s services, making it temporarily unavailable for its
users. These attacks are usually intended to cease the services of an
internet connected host however some attempts may target a certain
machine as well. Distribution denial of service attacks differ from
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Denial of service attacks in the manner in which they are launched, and
their launchers. DDoS attacks can be sent by multiple people whereas the
DoS attacks are sent by a system or a single person. In 2014, the
frequency rate of verified DDoS attacks had gone up to 28/hour. These
attacks mainly target business organizations or websites with larger
traffics.
There are no fixed areas where these attacks may occur; they target
industries all around the world. DDoS attacks mostly occur when the
server being targeted is flooded with communication requests from
attackers or a bot network. The server not being able to control HTTP
requests any further, ultimately shuts down, making its services
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unavailable for the legit users alike. These attacks normally do not
cause any kind of damage to the website or server but do take it down
temporarily. The applications of this method have expanded a lot and are
now being used for more malicious purposes; like covering up frauds and
deterring security panels etc.
Recent DDoS Attacks on Banks
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Last year, the chief names of American Banking were targeted by one
of the biggest and the most complicated set of distributed DoS attacks.
At the beginning, the victims were Wells Fargo, United States Bancorp,
JPMorgan Chase, Bank of America and the PNC back. Afterwards, websites
started crashing frequently, people were unable to transact amounts due
to the servers being down, and then various IT experts started
panicking. Given below are some points to ponder keeping these attacks
into account.
Larger banks, including the names mentioned above, have the money to
maintain the basic DDoS protection but even their measures could not
stop the attacks last year. With their security solutions, they may be
able to stop 90% of the attacks – less than 1 Gigabyte per second in
size. But the attacks that target such banks go beyond this limit,
making them unable to control it. However, the smaller banks with
minimal to no DDoS protection can be taken down by much smaller hits. A
moderate sized DDoS attack can paralyze their functions and operations.
For these vulnerable local banks, third party solutions such as
on-demand services are a good bet.
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- The Need for Holistic Protection
The attacks showed that having a mitigation appliance or a maintained
firewall will not be enough. To deal with the present day’s DDoS
attacks, we need higher bandwidth, new technologies, and a skillful DDoS
protection staff. Having this combo, we may be able to stop both DNS
and HTTP link based attacks, along with the application layer hits that
are now becoming so popular.
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