Aon Limited is authorized and regulated by the Financial Service Authority
in respect of insurance mediation activities only. There is no
charge for participating enterprises and individuals. Evalubase
provides market research, vendor ratings, field expert analyses, real-time
scorecards, benchmarking services and consulting.XpressPress.

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aon. This non-disruptive, cost-free IT auditing method can heavily
arm those negotiating with vendors and can be used to align the organization's
technology portfolio.

Consulting firms also can work with Evalubase to align practices based on
IT market trends; target offerings to areas of emerging technology interest or
difficulty; help clients select optimal solutions and implement them most
effectively; maintain internal skill matrices; generate client leads; and
promote individual consultants and the entire firm.

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The map assesses the level
and nature of terrorist threat around the world and is the third in an annual
series.
Efforts by the insurance market to press the US Federal Government for
reauthorization of TRIA are intensifying as the deadline for its expiration
draws nearer.
"This level of quality and detail in IT market research is long overdue,"
said Frank Chisholm, Aptsoft president and CEO.

About Evalubase Research, Inc.

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The US rating of 'elevated' remains unchanged from last year.

Resources for web -page authors who want to make their sites easier for visitors to use.

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These forward-looking
statements are subject to certain risks and uncertainties that could cause
actual results to differ materially from either historical or anticipated
results depending on a variety of factors.

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"Terrorism is not a new threat and many international businesses have to
date been rightly pre-occupied with the risks facing their operations in the
Middle East, Africa and the Gulf. Businesses need to explore
alternative options for mitigating and transferring their terrorism risks
now.com ) today announced the general availability of its
online benchmarking and market intelligence service for the information
technology (IT) industry.
"Although traditional IT analyst firms have long played a valuable role in
monitoring the IT marketplace, Evalubase is addressing the palpable need for a
credible source of unbiased, timely and empirical information about how IT
solutions and vendors actually stack up in the field," said Doug Laney,
Evalubase co-founder and CEO.

Patent-pending research process includes free comparative IT scorecards
and participant compensation
Due to increasing IT compliance and ever-present cost concerns, Evalubase
introduced the first technology portfolio scorecard(TM) system. The firm's technology
rating measurements are based exclusively on responses from actual technology
users. For more information, visit
http://www.

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Businesses which originate
from these countries should also be aware of threats to their operations and
personnel abroad as evidenced by incidents such as the terrorist attack on the
Australian embassy in Indonesia , the recent bombing of a British theater and
school in Qatar and the thwarted plot to blow up the Italian embassy in
Lebanon. With the uncertainty surrounding TRIA, Aon is urging its clients
to join the lobbying. Evalubase also partners with organizations
such as technology user groups, conference organizers, consulting firms and IT
media companies to provide relevant research for their members .

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Threats From Terrorist Activity Have Made the World a Riskier Place, According
to Aon's 2005 Terrorism Risk Map

PHILADELPHIA, Regardless of whether or
not the US Federal Government authorizes an extension to TRIA (Terrorism Risk
Insurance Act) beyond the end of this year, terrorism remains a very real
threat and should not be ignored. Potential factors that could impact
results include: general economic conditions in different countries in which
we do business around the world, changes in global equity and fixed income
markets that could affect the return on invested assets, fluctuations in
exchange and interest rates that could influence revenue and expense, rating
agency actions that could affect our ability to borrow funds, funding of our
various pension plans, changes in the competitive environment, changes in
commercial property and casualty markets and commercial premium rates that
could impact revenues, changes in revenues and earnings due to the elimination
of contingent commissions, other uncertainties surrounding a new compensation
model, the impact of regulatory investigations brought by state attorneys
general and state insurance regulators related to our compensation
arrangements with underwriters and related issues, the impact of class actions
and individual lawsuits including derivative actions and claims under ERISA,
the cost of resolution of other contingent liabilities and loss contingencies,
and the difference in ultimate paid claims in our underwriting companies from
actuarial estimates. These scorecards can
track an organization's portfolio of technology assets, maintain ratings of
product and vendor performance, and benchmark key metrics versus peer group
experiences.

-- Online access to various levels of aggregate metrics by market,
solution type, solution and/or vendor

-- Saving charts and specifying email alerts as research data is updated

-- Searching and browsing individual detailed user evaluations that
include evaluator comments on their experiences with the solution

-- Opt-in based requests for follow-on interviews with evaluators

-- Custom analyses performed by Evalubase statisticians

IT departments can use Evalubase to benchmark their experiences against
their peers; improve the speed and confidence of selecting IT products; reduce
implementation risks; manage and negotiate with vendors from a position of
knowledge; identify underperforming technologies and vendors; eliminate
technology redundancies; improve the cost structure of IT and track technology
adoption trends.

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Businesses Cannot Afford to Ignore Terrorism Risk Says Aon

evalubase. Evalubase can be reached via its website at http://www.

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newscom . The most recent manifestation
of this was the murder of filmmaker Theo Van Gogh in November 2004 by a Dutch
Moroccan Islamic extremist. Furthermore, we do not muddle our pure research with
rehashed news or any vendor-provided numbers whatsoever."
Evalubase is led by a senior team of former market research executives
from Meta Group, Forrester Research, ACNielsen and First Albany Capital who
understand first-hand the buying challenges of IT departments and the
competitive challenges of IT vendors.

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The Terrorism Risk Map shows that participation in the US-led Iraq
coalition has increased terrorism risk in countries such as Australia, Poland
and Estonia. The company
employs approximately 48,000 professionals in its 500 offices in more than 120
countries. In
addition to the online scorecards available to all participants, Evalubase's
market intelligence system offers a wide range of self-service, research
deliverables, including:

-- Flexible querying, charting dozens of aggregate product and vendor
ratings, including: performance, functionality, usability , reliability,
satisfaction, value, support, licensing, cost, cost-of-ownership, ease-of-
implementation , various ROI metrics and buying criteria."
Evalubase annual subscriptions are available to IT departments, vendors,
professional services firms, public relations firms and investment firms. IT
portfolio scorecards(TM) are available free to all participating IT
professionals and departments .

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According to Aon's 2005 Terrorism Risk Map,
presented at the RIMS annual conference today, terrorist activity is making
the world a riskier place in which to do business. Similarly,
fears that Islamic extremists might stage attacks to try to influence the UK
general election on 5 May also reinforce the UK's risk rating.
Further information concerning the Company and its business, including
factors that potentially could materially affect the Company's financial
results, is contained in the Company's filings with the Securities and
Exchange Commission. "Our proprietary research collection and
delivery method offers direct online access to hard data and, therefore,
markedly improved research validity and velocity over the traditional
anecdotal approaches.

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Among these, the
Netherlands, Germany, Belgium and Denmark have all been marked as higher risk
because of increased Islamic extremist activity. Businesses can then assess how best to
allocate their expenditure on insurance and counter terrorism risk management
procedures effectively," he added. This service was designed in collaboration with
technology executives and IT vendors to continuously capture the real-world
experiences of IT professionals with the technologies they use.

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"But, more importantly ," says Aaron Davis, vice
president of Aon' s Property Syndication Group in the US, "if TRIA does expire
at the end of this year the aggregate capacity of the stand-alone terrorism
market is going to come under severe strain. Subscribers
to Evalubase receive self-service access and alerts to compare dozens of
performance, satisfaction and financial metrics on IT vendors and their
products .

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209.3113
Al_Orendorff@aon.
(http://www. "Our singular objective is to help
organizations make optimum decisions when selecting, implementing, developing
or marketing enterprise technologies ," said Tucker Edmundson, Evalubase co-
founder and EVP Business Development. "We will be relying on
Evalubase to stream us high-caliber market data and competitive insights to
enhance our product offerings and target our marketing in-step with stated
user needs and real market trends, rather than speculation and hearsay.com .

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There is concern that Al-Qaida and other international terrorist
organizations could take advantage of anti-western sentiment and launch
terrorist attacks in these countries in future.

MEDIA CONTACT:
Susan Mendelsohn
Mindshare Communications
760-579-2625

This release was issued through The Xpress Press News Service, merging e-
mail and satellite distribution technologies to reach business analysts and
media outlets worldwide .

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About Aon:
Aon Corporation (NYSE: http://www.

Evalubase Research Counters Traditional IT Research Methods with User-Based Vendor Ratings Reviews and Benchmarking

com .

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humanfactors webword

com ) is a leading provider of
risk management services, insurance and reinsurance brokerage, human capital
and management consulting, and specialty insurance underwriting.

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(Logo: http://www.com/cgi -bin/prnh/20041215/CGW049LOGO )
This year 31 countries have received higher terrorism risk ratings than
last year, almost half (48%) of which are in Western Europe. Although companies do need to be aware of
the global picture, the 2005 map highlights the need for vigilance in so
called 'safer ' European countries," commented Paul Bassett, executive director
in Aon's Crisis Management division . The update provides a current snapshot of the
state of the terrorism insurance market and describes the metrics risk control
and other issues surrounding it.

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SAN DIEGO, Evalubase Research, Inc .
IT vendors can employ the Evalubase system and ratings to compare market
perception of their products versus their competitors; improve products based
on anonymous hands-on feedback; identify market trends and buying patterns;
perform win-loss analyses of themselves and their competitors; adjust
licensing practices and core business processes to improve buyer satisfaction;
generate leads through direct evaluator interviews; and augment their
reputation by publishing any ratings in which they dominate.
Headquartered in San Diego, California, Evalubase is a market information
services firm operating in the information technology (IT) sector.

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Backed by broad resources, industry knowledge and technical
expertise, Aon professionals help a wide range of clients develop effective
risk management and workforce productivity solutions.evalubase.

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com

Notes to editors:
In addition to the Terrorism Risk Map, Aon has also released an update to
the Terrorism Risk Management + Risk Transfer Market Overview originally
published in December 2004.

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In fact, 27
terrorist incidents (albeit minor) occurred in the US during 2004.
"Companies must acquire as much knowledge as possible about the risks they
face and their exposure to those risks in order to minimize the human and
financial impact of such attacks."

For further information contact:
Sally Coode-Bate Al Orendorff
Aon Press Office (UK) Aon Press Office (US )
+44 (0)207 505 7478 312 381 3153
Cell phone: +44 7718 104991 Cell phone: 773.

This press release contains certain statements related to future results,
or states our intentions, beliefs and expectations or predictions for the
future which are forward-looking statements as that term is defined in the
Private Securities Litigation Reform Act of 1995.
Following a brief survey of any technology they choose, participants
receive instant access to scorecards that anonymously contrast their
experience versus organizations in their industry and of similar size.