[BreachExchange] How CISOs Can Demonstrate Business Value

[Destry Winant]

https://www.securityweek.com/how-cisos-can-demonstrate-business-value

CISOs Must Clearly Demonstrate Their Value to the Business in Dollars and Cents

If you’re the typical CISO or other level of information security
officer, chances are this job description sounds about right:

“My role is to manage information security to keep the business secure.”

And your success metrics – how you communicate what you do to the rest
of business – probably relate to maintenance and improvement of the
technical aspects for security, such as vulnerabilities patched or
NIST CSF maturity levels met.

If that’s you, I’d argue that you have your job description only
partially correct.  In fact, your job, like everyone else’s in the
organization, is not just about defending the business but enabling
the business to make money at an acceptable level of risk,
cost-effectively.

To truly succeed in their roles, CISOs must clearly demonstrate their
value to the business in dollars and cents. That’s going to mean
shifting their branding from “minimize threats and vulnerabilities” to
include "providing options for business enablement", where trade-offs
between security investments levels and resulting risks are clearly
articulated for informed business decisions to be made.

CISOs need to focus on the strategic objectives of the business, as
well as the people, technology and processes supporting the most
important functions of the business.  The technical side of security
needs to be seen as part of that whole.  For example, your risk
register. Most risk registers are run as a ledger book, a place to
record control deficiencies, audit findings and policy exceptions or
just vague categories of worrisome things like “moving to the cloud”.

Those entries may get categorized based on the gut feel of analysts as
high-medium-low risk (most likely medium!) or just left in an
undifferentiated pile. Either way, no effort is made to relate these
“risks” to anything the business cares about – like a potential
financial loss.

ADP has a better way. The human resources and payroll services
company, and one of the most sophisticated cyber risk managers around,
has two rules for risk register management, as described by ADP’s Lead
Security Consultant, Marta Palanques, at the FAIR Conference 2017:

1. Every entry must relate to an IT asset that must in turn relate to
a product line. For instance, the risk might be loss of a data center
that knocks out servers that run applications that run products that
bring in revenue.

2. Every entry must be defined as a “loss event” according to the
standard FAIR model (Factor Analysis of Information Risk) for cyber
risk quantification, with a potential frequency and impact in dollar
terms (as in lost revenue from the data center outage).

A risk register like ADP’s clearly demonstrates the business value of
cybersecurity and quantification is the key. With an estimate in
dollar terms of loss events, CISOs can also prioritize a Top Risks
list based on relative ranges of potential losses then rank, for
instance, the cost of that application going down vs. the loss by data
breach of the customer information tied to that application.

The next step in the value chain is to answer the question, “Among our
top risks, what’s the return on investment for mitigation?”  Again,
risk analysts can leverage the FAIR model, tweak inputs in given risk
analyses and look at alternate scenarios, for instance, “Would
implementing two-factor authentication reduce the probable losses
enough to justify the investment?”

Next, risk analysts can seek to answer the question of whether actual
loss exposure is decreasing over time. To do that, they identify the
variables across the top risks that most influence the potential
losses, and track and report on those Key Risk Indicators regularly.

The ultimate demonstration of the value proposition of cybersecurity
will come when CISOs have fully integrated their cyber risk
quantification work into the organization’s enterprise risk management
program. When they are able to discuss on equal terms with the keepers
of market risk and financial risk how cybersecurity helps grow the
value of the business. Maybe a lofty goal, but one that starts with a
tangible first step, implementing a businesslike approach to measuring
cyber risk, built on a standard risk quantification model like FAIR.