D is for


16 Feb 2018

D is for

Cyber Security doesn’t need to be complicated, so to ease us into the new year, how about we go back to basics with the language of cyber. We cant all be tech savvy… or can we?

We will be sharing with you the down to earth A-Z of Cyber Security, so if you want to know your Antivirus from your Antispam, this series of articles are just for you!

Dark Web

Most of us are familiar with the Internet, and using search engines such as Google and Bing to find information we need. Those operate in a part of the World Wide Web that is often called the Surface Web. It seems like we can find a huge amount of data on the surface web, but in actual fact it’s only about 5% of all material that is available online. A large portion of the remaining data is found on the Deep Web – see below – but there’s a very murky area which is hidden away and can only be accessed by using special web browser software, the most well known being The Onion Router, or ToR. Most users will never have cause to visit this area, because it’s where various illegal web sites / services are found, including drugs, stolen goods, child abuse, false identity documents, counterfeit money etc. It’s therefore an area where criminals globally congregate to deal in and share their services.

Data Centre

A data centre is typically a large room – or set of rooms – with multiple servers in it. It can vary in size from one room with a few racks of servers, to a site with many thousands of servers. Typically they will have redundant power supplies, some form of backup solution, and will often provide services to multiple companies at the same time. Some organisations will run their own data centres, some will outsource their services to a Third Party, and some will operate a mix.

Data centres are typically where cloud services live. Companies such as Microsoft, Google and Amazon offer multiple data centres across most of the continents.

DDoS

Distributed Denial of Services (DDoS) are a method of attack on a company’s services (typically internet based, like web sites or file sharing). They are carried out by multiple internet connected devices including PCs, laptops and IoT machines, often using botnets. The word Distributed is used to signify that the devices are spreads around, possibly even al over the globe.

When a DDoS attack is carried out, the target is overwhelmed by multiple messages being sent from all the devices in the botnet, to the extent that it is rendered unusable.

A way of thinking of this is if you have a crowd of people trying to get through a door. If they move one at a time through the door, there’s no problem. If everyone tries to get through the door at the same time, it will become blocked and take time to become unblocked.

Deep Web

As mentioned above in Dark Web, the Deep Web makes up a huge proportion of the World Wide Web. The sites in this area are not indexed, which means they can’t be found by search engines like Google and Bing, but that doesn’t mean that they are providing illegal services.

Deep Web sites are typically where you can find information that isn’t really for public consumption, but which is used by special interest groups. This will include research groups, academic communities, file sharing sites etc. Users access the sites only if they know the exact address, but can use standard browsers such as Internet Explorer and Chrome – other browsers are available.

Decryption

Decryption is how cryptography makes messages readable again after they have been encrypted. Depending on how data is encrypted, decryption may happen automatically, or you may have to carry out a specific routine using special software.

DOS

Denial of Service (DOS) is similar to DDoS, but instead of being based on multiple devices acting concurrently, is based on a single device. That single device will send multiple messages consecutively at a very high rate, with the aim of overloading the target device.

———————————————————————————————

Protection Group International believes that cyber security doesn’t need to be overly complicated, incomprehensible or vastly expensive. We specialise in delivering strategic vulnerability assessment services and offer a range of senior cyber awareness education to enable you to tackle cyber threats in-house. For more information click here.

Our partner company, Protection Vessels International, is focussed on the efficient delivery of high quality, cost effective security solutions for the maritime community. We invest in our well-maintained logistic infrastructure to enhance customers’ business continuity through the protection of their assets and people. For more information click here.

author

By Steve Mair

Senior Cyber Security Consultant

Share this article

RISK PORTAL

Your free global geopolitical
risk dashboard

PGI’s Risk Portal tool provides daily intelligence feeds, country threat assessments and analytical insights, enabling clients to track, understand and navigate geopolitical threats.

The Risk Portal gives users up-to-date information and analysis on global affairs.

The Risk Portal allows users to visualise information in a unique and instantly understandable way. Mapping filters enable the visualisation of incidents by threat category, time period, perpetrator and target type.

Risk Portal users can upgrade their accounts to include the Report Builder and Country Profile Generator features. The Report Builder allows users to select information, data and images from the Risk Portal and create bespoke reports and emails.

Subscribers to PGI’s Bespoke services receive tailored analysis on specific sectors and geographies of interest, delivered at a frequency they determine.

Visit the Risk Portal

Subscribe to our Cyber Bytes Newsletter

Keep yourself in the loop with PGI by signing up to our Monthly Cyber Bytes email. You will receive updates, tips and narrative around what has been happening in the world of information security.

Get in touch today

For more information on how we can help you or your business, please contact us via:

Related News

CISMP, CISSP and CISM - what's in an acronym?

20 Mar 2017

There is a wide range of different security courses available, and a mind-boggling array of certific...

Read news article

International Womens Day - Pioneering Women in Tec...

08 Mar 2017

Pioneering Women in Technology – Katherine JohnsonThe Oscar season has been and gone. The...

Read news article

Law Firms and why they need cyber security

06 Mar 2017

Suffering a data breach can be devastating for any company but for law firms the impacts can be part...

Read news article
Back to the News Hub

Follow us

+44 (0)207 887 2699
©2017 PGI - Protection Group International Ltd. All rights reserved.
PGI - Protection Group International Ltd is registered in England & Wales, reg. no. 07967865
Registered address: Cascades 1, 1190 Park Avenue, Aztec W, Almondsbury, Bristol BS32 4FP