Theos built the engagement around the threat actors targeting our sector in Hong Kong. The findings were structured for HKMA submission and the gaps have since been closed.
Incident Response Services: When something goes wrong, speed and expertise determine the outcome.
5,000+ incidents managed. Remote response initiated within 4 hours, 24/7.
OVERVIEW
What is incident response?
Incident response is the structured process of identifying, containing, investigating, and recovering from a cybersecurity incident. The decisions made in the first hours determine how far the damage spreads, how long recovery takes, and what evidence remains.
Theos incident response combines technical depth with APAC-specific operational experience. Theos practitioners have managed ransomware, business email compromise, advanced persistent threats, insider threats, and supply chain compromises across the region. When an incident happens, the team that responds already knows this region.
What Incident Response Includes:
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Remote response within 4 hours
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Spread stopped. Damage limited
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Forensic analysis of what happened and what was affected
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Breach extent established rapidly
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Threat eliminated before operations resume
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Evidence and reporting for APAC obligations
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Findings for leadership, regulators, and insurers
Business Outcome:
The incident is contained. The scope is understood. Evidence is preserved. Your organisation recovers with clarity on what happened, what was affected, and what needs to change. Your regulator and insurer have the documentation they require.
THE CHALLENGE
Every hour an incident goes uncontained, the damage compounds.
When a cyber incident response is required across APAC, the quality of the response determines how much of the damage is avoidable. Organisations with the right team already engaged recover faster, contain more completely, and face regulators with better documentation.
The other failure mode is delay. Reaching a provider you have never worked with, negotiating commercial terms, and onboarding a team during an active incident costs hours you cannot afford. Every hour of uncontained attacker access is an hour of additional lateral movement, data exfiltration, and evidence destruction.
The organisations that recover fastest are the ones that had the right team engaged before the incident started.
What the right response prevents:
Wider blast radius
Uncontained attacker access compounds damage with every passing hour
Evidence destruction
Attackers cover tracks as response teams scramble to engage
Regulatory exposure
Missed notification windows and incomplete documentation
Extended downtime
Recovery without full forensic clarity creates re-infection risk
Reputational damage
The story of how the incident was handled becomes the story
THEOS APPROACH
Contain fast. Investigate thoroughly. Recover with confidence.
Theos incident response is built around one priority: stopping the damage from compounding while the investigation runs. Containment and investigation run in parallel, because waiting costs time you do not have.
Immediate Mobilisation
Theos operates a 24/7 incident response function. Remote containment begins from first contact. Where on-site deployment is required, Theos deploys across APAC, typically within 24 to 48 hours.
Parallel Containment and Investigation
Theos runs containment and investigation simultaneously. While the response team acts to stop the spread, forensic practitioners establish the attack timeline, identify affected systems, and determine how the attacker gained and maintained access. Both workstreams inform each other in real time.
Scope Determination
Assuming a breach is smaller than it is is one of the most costly mistakes in incident response. Theos establishes the full extent of attacker access immediately: which systems were reached, what data was touched, and how long the attacker was present. That clarity is the foundation of a clean recovery.
Recovery Without Re-infection Risk
Theos confirms the attacker has been evicted, persistence mechanisms removed, and the initial access vector addressed before an incident is declared closed.
Regulatory and Legal Support
Theos has experience coordinating with law enforcement and regulatory bodies across APAC jurisdictions. Theos supports evidence collection, notification requirements, and communication processes in compliance with local regulations, including MAS, HKMA, BNM, BSP, and applicable data protection frameworks.
BENEFITS
What Theos Incident Response delivers for your organisation.
Faster containment
Response begins within hours
Clear scope
Full breach extent established rapidly
Evidence preservation
Forensic-grade collection from the first moment of engagement
Clean recovery
Systems returned to operation only when the threat is fully evicted
Regulatory confidence
Documentation and coordination support for APAC reporting obligations
Post-incident intelligence
Findings feed directly into MDR detection tuning and IR preparedness improvements
HOW IT WORKS
How Theos Incident Response works.
1
Initial Contact and Triage
Contact Theos via the 24/7 incident response hotline or emergency contact. The team assesses the situation immediately and begins remote response. A retainer arrangement means this step requires no commercial negotiation. Response begins from first contact.
2
Containment
Theos takes immediate action to stop attacker movement across your environment. Affected systems are isolated, malicious processes are terminated, and attacker access paths are closed. Containment actions are calibrated to limit damage without destroying forensic evidence.
3
Investigation and Scope Determination
Theos forensic practitioners establish the full breach timeline: initial access vector, lateral movement paths, systems and data affected, and attacker persistence mechanisms. The investigation runs in parallel with containment so your leadership team has clarity on scope as rapidly as possible.
4
Eradication
Every attacker artefact is removed: malware, backdoors, persistence mechanisms, and compromised credentials. Theos confirms eradication is complete when the forensic investigation supports it.
5
Recovery
Systems are returned to operation in a controlled sequence, with monitoring in place to detect any re-infection. Recovery is not declared complete until normal operations have been restored and confirmed clean under active observation.
6
Post-Incident Report and Debrief
Theos delivers a full post-incident report covering the attack timeline, breach scope, eradication actions, and recommendations to prevent recurrence. A debrief is conducted with your technical and leadership teams. Documentation is produced in a format suitable for regulatory submission and insurer review.
INCIDENT TYPES
Incidents Theos responds to.
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Ransomware
Encryption, extortion, and data exfiltration scenarios
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Business email compromise
Fraudulent payment instruction and account takeover
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Data breaches
Unauthorised access to regulated or sensitive data
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Advanced persistent threats
Long-dwell, targeted intrusions
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Insider threats
Malicious or negligent insider activity
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Malware outbreaks
Destructive or espionage-oriented malware deployment
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Unauthorised access
Account compromise, privilege escalation, and perimeter breach
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Cloud security incidents
Misconfiguration exploitation, cloud account compromise
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Supply chain compromises
Third-party access path exploitation
SCOPE COVERAGE
Where Theos responds.
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Remote response
Initiated within 4 hours, 24/7, across all markets
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On-site deployment
Available across APAC, typically within 24 to 48 hours
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Singapore, Hong Kong, Malaysia, Philippines
Primary markets with direct practitioner presence. Theos delivers incident response in Singapore and across APAC
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Broader APAC
On-site deployment coordinated based on location and logistics
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Cross-border incidents
Coordination across multiple APAC jurisdictions built into how we operate
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Cloud environments
AWS, Azure, GCP incident response alongside on-premise
PROOF
What the work produces.
5,000+
Detections Managed
4 hours
Remote Response SLA
24/7
Availability, Every Market
8.9
Client Satisfaction Score
Hear it from our clients
What outcome accountability
looks like in practice.
THEOS operates across Singapore, Hong Kong, Malaysia, and the Philippines, serving regulated enterprises where the cost of a breach is highest. What our clients describe is not a vendor relationship. It is a security partnership.
“
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The engagement identified gaps our existing programme had not surfaced. The findings went directly into our regulatory submission and the gaps have since been remediated.
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Theos engaged credibly at board level and at SOC level in the same programme. The ability to do both simultaneously, and produce documentation that holds up to BNM examination, is what made the difference.
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We called Theos during an active ransomware incident. Two weeks later the threat was contained. We have not used another security provider since.
RETAINER vs AD HOC
IR Retainer vs ad-hoc engagement: why the structure matters before the incident.
Theos offers both ad-hoc incident response and retainer-based arrangements. The difference is commercial and operational.
Factor
Response initiation
SLA guarantee
Environment familiarity
Commercial friction
Proactive services
Cost certainty
Theos IR Retainer
Immediate. No commercial negotiation during an incident.
Defined and agreed in advance.
Theos knows your environment before the incident.
None. Retainer covers response.
Tabletop exercises, IR preparedness, and draw-down flexibility included.
Known annual cost. Unused hours may draw down across other services.
Ad-hoc Engagement
Delayed by scoping, contracting, and onboarding.
Not guaranteed. Subject to availability.
Onboarding happens during the incident.
None. Retainer covers response.
Tabletop exercises, IR preparedness, and draw-down flexibility included.
Unknown. Billed at incident rate.
USE CASES
Who Theos Incident Response is built for.
Organisations actively experiencing a breach
If a breach response is needed now, contact Theos. Remote response begins within 4 hours. On-site deployment across APAC is available within 24 to 48 hours. Every hour matters.
Regulated enterprises with notification obligations
MAS, HKMA, BNM, and BSP all carry incident notification requirements with defined timelines. Theos incident response is structured to support evidence collection, regulatory coordination, and notification documentation from the moment engagement begins.
Organisations managing a breach with unknown scope
Managing a breach without confirmed scope is one of the most dangerous positions in incident response. Theos moves immediately to establish breach extent, identify affected systems and data, and deliver the clarity your team needs to respond with confidence.
Organisations recovering from a previous incident
If a previous incident was contained but the forensic investigation was incomplete, re-infection risk remains. Theos can conduct a post-incident review to confirm the environment is clean and the access vector has been closed.
Organisations that want response certainty before an incident occurs
Engaging Theos before an incident happens is the right move. An IR retainer guarantees access, removes friction, and includes proactive services that reduce the probability and impact of an incident before it starts.
WHY THEOS
Why Theos Incident Response
Speed that comes from readiness
The 4-hour remote response SLA is a capability built into how Theos operates. Practitioners are on call. Tools are ready. Processes are designed for the worst possible moment.
APAC operational experience
Theos has managed incidents across financial services, insurance, gaming, hospitality, real estate, healthcare, manufacturing, and technology. Theos practitioners understand how breaches unfold across APAC, how each regulator expects them to be managed, and what evidence each jurisdiction requires.
Forensic depth that supports recovery and prosecution
Theos incident response integrates directly with the Theos digital forensics capability. The same team that contains the incident has the forensic depth to investigate it fully, preserve evidence to the standard required for legal proceedings, and produce findings documentation that stands up to regulatory scrutiny.
Intelligence that prevents the next incident
Every incident Theos responds to feeds intelligence back into the Theos MDR detection programme, VAPT scope prioritisation, and client IR preparedness work. The breach your organisation experienced becomes a detection rule, a playbook improvement, and a scope input for the next offensive engagement. The cycle is deliberate.
The team that responds already knows this region
Theos practitioners are embedded in the APAC threat landscape. They carry direct knowledge of the threat actors, breach patterns, and regulatory expectations governing our markets. When a cross-border incident requires coordination across multiple jurisdictions, that knowledge is already in the room.
GET PROTECTED TODAY
Security is not a product you buy. It is an outcome you earn.
If an incident is happening now, call us. If you want to make sure you are ready before it does, talk to us about a retainer.
We deliver outcomes.
FAQ
Frequently Asked Questions
The questions organisations ask most often before and during a cybersecurity incident.
What types of incidents do you respond to?
Theos responds to a wide range of cybersecurity incidents, including ransomware attacks, business email compromise, data breaches, insider threats, advanced persistent threats, malware outbreaks, unauthorised access, cloud security incidents, and supply chain compromises, across on-premise and cloud environments. Whatever the incident type, the objective is the same: contain the threat, understand what happened, and restore normal operations as quickly as possible.
How quickly can you mobilise in the event of an active incident?
Theos provides 24/7 incident response support and can begin remote response within 4 hours of initial contact. Theos has a track record of resolving critical incidents remotely, and where required, provides on-site deployment across APAC, typically available within 24 to 48 hours depending on location and logistics.
Do you provide remote-only response or can you deploy on-site in APAC?
Theos provides both remote and on-site incident response. The Theos team across APAC deploys responders on-site where required, while secure remote capabilities allow immediate containment and investigation from the moment of initial contact.
Can you help if we have already been breached and do not know the scope?
Yes. This is a common scenario. Theos moves immediately to establish the extent of a breach, identify affected systems and data, and uncover attacker activity. Theos forensic and threat hunting teams establish a clear timeline and scope, giving your team the clarity needed to respond with confidence.
Do you work with law enforcement or regulators?
Yes. Theos has experience coordinating with law enforcement agencies and regulatory bodies across multiple APAC jurisdictions. Theos supports evidence collection, reporting requirements, and communication processes in compliance with local regulations.
How do we engage Theos when an incident happens?
Clients reach Theos through the 24/7 incident response hotline or dedicated emergency contact. Upon initial contact, the team assesses the situation and deploys responders immediately. A retainer arrangement removes administrative friction at the moment it matters most, ensuring response begins from first contact.
What industries have you responded to incidents in?
Theos has responded to incidents across financial services, insurance, gaming and hospitality, real estate, healthcare, manufacturing, and technology. Clients include MAS and BSP-regulated institutions, large enterprise operators, and regional businesses managing security across multiple APAC markets. When an incident happens, the sector matters less than the speed and quality of the response.
Do you offer retainers or only ad-hoc incident response?
Theos offers both ad-hoc incident response and retainer-based arrangements. A retainer provides guaranteed access to the Theos response team with defined SLAs, removes commercial friction at the moment an incident occurs, and can be structured to include additional services across the Theos portfolio. For organisations that want certainty before an incident happens, a retainer is the right structure. When something critical occurs at the worst possible moment, the question of whether Theos will respond is already answered.
Can you work with our existing security tools (EDR, SIEM, cloud platforms)?
Yes. Theos works with your existing security stack where it provides the capability required for effective incident response. Theos analysts operate within the tools already in your environment wherever possible, maximising the value of what you have in place. Where existing tooling does not provide the visibility or capability the investigation requires, Theos deploys a lightweight toolset that can be rolled out quickly and with minimal operational disruption.
Do you offer incident response planning or tabletop exercises?
Yes. Tabletop exercises are one of our most utilised proactive services. Theos works with your technical and executive teams to simulate realistic incident scenarios, test response plans, and improve coordination across your organisation. The goal is a team that knows exactly what to do when it matters most.