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Preventing Toll Fraud

The best defense against toll fraud remains an educated customer.

WCS is totally committed to the control of toll fraud. While no telecommunications system can be made entirely free from the risk of toll fraud, diligent attention to system security can reduce that risk considerably.

WCS devotes substantial resources to detect suspicious calling patterns, alert businesses and catch violators. However, you, the customer, must become a watchdog over your network if you are to secure the threats against thieves attempting to access your network. 

Select from the topic overviews below and learn some concrete steps you can take to secure your system.

Keep Employees Informed

Since one of the leading causes of toll fraud is theft of access authorization codes and passwords, make sure your people guard these numbers carefully. Instruct them never to write these numbers down or program them into auto dialers.

Warn traveling executives that thieves may be watching from afar with binoculars or lurking at adjacent pay telephones when they make a call, trying to obtain their access codes or calling card numbers.

In addition, instruct employees to verify the identity of someone placing a collect call to your company before accepting the charges (you may even want to institute a password for salespeople or other employees who may call collect).

And warn everyone in your company about one of the fastest growing toll fraud tactics - the seemingly innocent incoming caller who asks to be transferred within your system. This person may, in fact, be a thief using deceit to enter your network and gain access to an outside line. It's a good idea to direct your employees to immediately report both suspicious behavior on the part of callers asking to be transferred, or a sudden increase in the number of requests for transfer.

When all is said and done, the more your employees know about phone system fraud, the easier it will be to enlist them in the effort to prevent it (for more information on employee education, please read Learn to spot suspicious incoming calling patterns).

Safeguard Your Equipment

Beef up security around your switch room and wiring closets. Change the locks on occasion. Secure documentation and reports that may reveal trunk access codes or password information. Replace vendor- supplied "dummy" passwords with passwords of your own creation and change administrative log-on passwords often.

And, most importantly, explore ways to secure your Private Branch Exchange (PBX) remote maintenance port. That allows a technician to perform a repair from a remote location. But it also lets clever crooks take control of your telephone system. For additional security, consider installing an optional Remote Port Security Device (RPSD).

When installing or upgrading a PBX, ask your technician to configure your system to afford you maximum protection. Example: set it to allow only pre-programmed international telephone numbers to be called. It also makes sense to make sure your equipment vendor has a program to change its maintenance access passwords and make sure these passwords are changed regularly.

Secure Your Remote Access Feature

Remote access can be the most valuable - and vulnerable - part of any Private Branch Exchange (PBX) system.  An off-premises executive may use it to dial directly into the company's PBX in order to make a long distance call less expensively than with a credit card. It's also one of the primary avenues of illegal entry into your system. To lessen the vulnerability of your remote access system, use authorization codes or other passwords to control access and limit calling range after normal business hours or provide attendant intervention.. Remote access allows callers from the public network to access your PBX system using an access code.

Mind Your P's, Q's And Numbers When Choosing Passwords And Access Codes

One of the most effective ways to stymie crooks is to select hard-to-break passwords and remote access codes. Rule number one: use the maximum number of characters, mixing the pound sign (#), asterisk (*), and digits (0-9).

To make a crook's life more difficult, it makes sense to avoid passwords which contain the following:

·         The same number as your extension (or your extension reversed)

·         Predictable patterns, like ascending or descending digits (1234, 1111)

·         The same digits (5555555)

·         Align numbers that identify the owner (room number, employee ID # or even a social security number).

And please don't use voicemail or PBX manufacturer default passwords or default access numbers - they're easy to crack as almost everyone knows them.


Change Passwords and Codes Often

It's a good idea to change passwords and access codes a minimum of four times a year for both the switch (software based - remote access) and adjuncts (hardware based - voice mail systems and automated attendant services).

Change or remove authorization codes when authorized users leave the company, especially when technicians depart. Never, never, write down remote access codes or passwords, or program them into auto-dialers.


Take More Control of Your Long Distance Calling

Since placing unauthorized long distance calls is the goal of most thieves, the more controls you place on long distance calling the more secure your system will be. Some suggestions include:

·         Prohibit or restrict calls to countries you do not do business with

·         Block all calls to the 809 area code (the Caribbean), a popular calling destination for tele-thieves and call resellers

·         Limit international calling to only those employees who need to place international calls. Limit calls to domestic area codes if calls to these states are not permitted

·         Put time of day restrictions into effect, such as prohibiting or limiting outbound calling at night and on weekends


Learn To Spot Suspicious Incoming Calling Patterns

In addition to fraudulently obtaining access to your Private Branch Exchange (PBX), one of the fastest growing ways thieves are trying to obtain an outside line is by deceiving your operators or employees. They may enter your system through a local access number or your 800 service, then ask to be passed back and forth, eventually obtaining an outside line. We recommend directing switchboard operators to report unusual incoming calling patterns, including the following:

·Callers repeatedly dialing in and asking for an invalid extension

·Excessive hang-ups

·Obscene calls

·Wrong numbers

·Callers asking employees what number or party they've reached

·Dead air calls (incoming calls where the caller remains silent and waits for a hang-up)

Although seemingly innocent, each of these is a technique used by thieves to gain access to an outside line.

Check Your Voice Mail

Experienced toll hackers can connect to a voice mail system and access private bulletin board messages, create their own mailboxes, or may repeatedly transfer within the Private Branch Exchange (PBX) until they succeed in finding an outside line. Defensive measures include limiting voice mail to internal calling only, removing mailboxes immediately when an employee leaves, and avoiding spare mailboxes before they are needed.

Since voice mailbox security is provided by personal identification numbers (PINs), require users to change their PINs regularly. Make sure they use the maximum number of randomly generated digits in a PIN to reduce the odds of a hacker cracking a code.

And never, ever publish a list of remote access telephone numbers.


Slam the Door On Automated Attendant Crooks

After remote access and voice mail, automated attendants are the most common entry point for "telecrooks". They automatically answer a company's telephone, but can also serve as an open door to toll fraud. Telethieves enter the automated attendant function, then dial the 91XX or 9011 extension.

On many Private Branch Exchanges (PBX) and voice mail systems (with dial-out capabilities left active), these extension numbers connect to outside long distance lines. To reduce automated attendant fraud, restrict or block access to long distance trunks and local dial capabilities. In particular, block access codes such as 9XXX and possibly even the 8XXX fields or install a "verify extension field" capability, if available.

Monitor, Monitor, Monitor

Continuous monitoring of your company's calling patterns will help you to identify fraud at an early stage and minimize loss. It's a good idea to regularly monitor Private Branch Exchange (PBX), voice mail, automated attendant and 800 call detail records.

Learn to spot patterns such as an increase in after-hours calls, calls to countries you don't do business with, multiple short duration inbound calls (especially after working hours) and incoming calls from suspect areas such as the 212 and 718 area codes in New York City, where much of the computer hacking originates.

Keep a sharp eye out for numerous incoming calls on your 800 lines followed shortly thereafter by a surge in long duration outbound 800 calls - a tip-off that thieves are entering through your 800 lines and then dialing out.

Act Promptly with a Plan

If, despite your best anti-fraud efforts, you suspect - or actually detect - tampering, that's the time to take action. Unlike calling card fraud, there is no limit to the potential for loss and complete liability in the event of toll fraud. And since toll fraud charges can mount fast, you can't afford to lose a minute.

Your first two calls upon suspecting toll calling fraud should be to your equipment vendor and WCS (or current toll calling provider). Together, they can begin to pinpoint the fraud source and block further fraud attempts.

WCS has a 24-hour hotline staffed by a team of technicians.  They're standing by to initiate immediate investigations of potential fraud in progress, help with fraud prevention by blocking the fraud.  They may be reached by dialing 1 888.280.4927.

You can never eliminate the risk of fraud. But you can be prepared if and when it occurs, and thus minimize the damage to your company's operations and finances. One thing you can almost count on - when fraud happens it won't happen at a convenient time. These criminals often will direct their heaviest assaults on your network when vigilance is at its lowest, during non-business hours, in the middle of the night, on weekends or holidays.

That's why it's a good idea to have ready a Crisis Intervention Plan (CIP). It should contain a checklist of actions you can take the moment you spot fraud. With a CIP in hand, you can minimize the time necessary to stop fraudulent calling, and perhaps even stop the telethieves in their tracks.

We at WCS are thoroughly committed to joining with our customers and law enforcement officials in the battle to control toll fraud. If you would like more information about how WCS can assist in securing your legacy or VoIP network from toll fraud,  please call your local WCS Account Executive or dial 1-888-940-5600


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