62/100IFR Score
Ranked #1 because of its Google rating and service focus: 5.0★ from 79 Google reviews, listed on Google as “Computer security service”.
Best Cybersecurity Companies in Castle Rock, CO (2026)
173 cybersecurity companies ranked by IFR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Castle Rock: GadellNet Consulting Services, IFR Score 62/100; 5.0★ from 79 Google reviews.
- 8
Most-reviewed: Colorado Computers, 322 Google reviews at 5.0★, the most of 173 ranked; ranked #8.
Rankings can't be bought. IT providers can't pay to change their rank or score. How we rank
173 Castle Rock cybersecurity companies are ranked here by IFR Score, from nine published factors. 39 open Saturdays and 28 open Sundays, based on posted hours. The median Google rating is 5.0★ across 173 rated IT firms.
Top 10 cybersecurity companies in Castle Rock at a glance
Ranked by IFR Score from public data. Sponsored placements are labelled and never change the order.
| Rank | Business | IFR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | GadellNet Consulting Services | 62 | 5.0★ (79) | Englewood, 16 mi away | — | Overall |
| 2 | CyTech International | 62 | 5.0★ (22) | Denver, 26 mi away | Sat · Sun · Evenings | — |
| 3 | Firma IT Solutions | 62 | 5.0★ (52) | Cimarron Hills, 4 mi away | — | — |
| 4 | Colorado Computer Support | 61 | 4.8★ (115) | Colorado Springs, 33 mi away | — | — |
| 5 | MSP Shift | 61 | 5.0★ (68) | Denver, 22 mi away | — | — |
| 6 | Blackpoint Cyber | 61 | 4.9★ (16) | Denver, 27 mi away | Sat · Sun · Evenings | — |
| 7 | Connecting Point | 60 | 5.0★ (177) | Greeley, 73 mi away | — | — |
| 8 | Colorado Computers | 60 | 5.0★ (322) | Castle Pines North, 14 mi away | Sat | Most reviews |
| 9 | TeamLogic IT | 60 | 5.0★ (53) | Arvada, 32 mi away | — | — |
| 10 | Go West IT | 59 | 4.7★ (43) | Greenwood Village, 16 mi away | — | — |
The 173 best cybersecurity companies in Castle Rock, ranked
Ordered by IFR Score, a 0–100 score from nine published factors. Paid placement never changes the order.
Ranked by IFR Score from public data. Sponsored placements are labelled and never change the order.
Scores below: based on 8 of 9 factors; recency not yet collected. Hatched segments mark factors we don't have yet.
Based in Denver, 26 mi away
62/100IFR ScoreRanked #2 because of its Google rating and service focus: 5.0★ from 22 Google reviews, listed on Google as “Computer security service”.
Based in Cimarron Hills, 4 mi away
62/100IFR ScoreRanked #3 because of its Google rating and service focus: 5.0★ from 52 Google reviews, listed on Google as “Computer security service”.
Based in Colorado Springs, 33 mi away
61/100IFR ScoreRanked #4 because of its Google rating and service focus: 4.8★ from 115 Google reviews, listed on Google as “Computer security service”.
#5 MSP Shift
Based in Denver, 22 mi away
61/100IFR ScoreRanked #5 because of its Google rating and service focus: 5.0★ from 68 Google reviews, listed on Google as “Computer security service”.
Based in Denver, 27 mi away
61/100IFR ScoreRanked #6 because of its Google rating and service focus: 4.9★ from 16 Google reviews, listed on Google as “Computer security service”.
Based in Greeley, 73 mi away
60/100IFR ScoreRanked #7 because of its Google rating and service focus: 5.0★ from 177 Google reviews, listed on Google as “Computer security service”.
Based in Castle Pines North, 14 mi away
60/100IFR ScoreRanked #8 because of its Google rating and review volume: 5.0★ from 322 Google reviews, the most in Castle Rock.
#9 TeamLogic IT
Based in Arvada, 32 mi away
60/100IFR ScoreRanked #9 because of its Google rating and service focus: 5.0★ from 53 Google reviews, listed on Google as “Computer security service”.
#10 Go West IT
Based in Greenwood Village, 16 mi away
59/100IFR ScoreRanked #10 because of its Google rating and service focus: 4.7★ from 43 Google reviews, listed on Google as “Computer security service”.
Based in Denver, 27 mi away
59/100IFR ScoreRanked #11 because of its Google rating and service focus: 5.0★ from 9 Google reviews, listed on Google as “Computer security service”.
#12 IT Colorado
Based in Loveland, 73 mi away
59/100IFR ScoreRanked #12 because of its Google rating and service focus: 5.0★ from 113 Google reviews, listed on Google as “Computer security service”.
Based in Castle Rock
59/100IFR ScoreRanked #13 because of its Google rating and review volume: 4.8★ from 244 Google reviews.
Based in Castle Rock
58/100IFR ScoreRanked #14 because of its Google rating and review volume: 4.8★ from 180 Google reviews.
#15 XimpleIT
Based in Denver, 20 mi away
58/100IFR ScoreRanked #15 because of its Google rating and service focus: 5.0★ from 24 Google reviews, listed on Google as “Computer security service”.
#16 FocusConnect IT
Based in Denver, 30 mi away
58/100IFR ScoreRanked #16 because of its Google rating and service focus: 5.0★ from 31 Google reviews, listed on Google as “Computer security service”.
Based in Berkley, 15 mi away
58/100IFR ScoreRanked #17 because of its Google rating and service focus: 5.0★ from 20 Google reviews, listed on Google as “Computer security service”.
Based in Denver, 27 mi away
58/100IFR ScoreRanked #18 because of its Google rating and service focus: 4.8★ from 28 Google reviews, listed on Google as “Computer security service”.
Based in Denver, 27 mi away
57/100IFR ScoreRanked #19 because of its Google rating and service focus: 4.8★ from 6 Google reviews, listed on Google as “Computer security service”.
#20 Redbot Security
Based in Denver, 28 mi away
57/100IFR ScoreRanked #20 because of its Google rating and service focus: 4.9★ from 17 Google reviews, listed on Google as “Computer security service”.
#21 Optiv
Based in Denver, 27 mi away
57/100IFR ScoreRanked #21 because of its Google rating and service focus: 4.0★ from 37 Google reviews, listed on Google as “Computer security service”.
Based in Lakewood, 26 mi away
57/100IFR ScoreRanked #22 because of its Google rating and service focus: 5.0★ from 17 Google reviews, listed on Google as “Computer security service”.
Based in Broomfield, 40 mi away
56/100IFR ScoreRanked #23 because of its Google rating and review volume: 4.7★ from 107 Google reviews.
#24 initial.IT
Based in Denver, 18 mi away
56/100IFR ScoreRanked #24 because of its Google rating and service focus: 5.0★ from 12 Google reviews, listed on Google as “Computer security service”.
#25 MainNerve, LLC
Based in Colorado Springs, 37 mi away
56/100IFR ScoreRanked #25 because of its Google rating and service focus: 5.0★ from 19 Google reviews, listed on Google as “Computer security service”.
Cybersecurity companies ranked #26 to #50
#1 to #25 are shown in full above. Here are #26 to #50, in IFR Score order; each links to its profile. We publish the top 50 of 173 ranked cybersecurity companies here; the rest are on their profiles.
| Rank | Business | IFR Score | Google rating | Distance |
|---|---|---|---|---|
| 26 | Executech | 56 | 4.9★ (85) | 44 mi |
| 27 | Ed's Computer Repair | 56 | 5.0★ (124) | 32 mi |
| 28 | Amnet IT Support & Cyber Security | 56 | 4.9★ (98) | 37 mi |
| 29 | Tekkis | 56 | 5.0★ (18) | 38 mi |
| 30 | Rocky Mountain Tech Team | 56 | 5.0★ (16) | 39 mi |
| 31 | Techie Bridge | 56 | 5.0★ (7) | 7 mi |
| 32 | 22HALO | 56 | 5.0★ (55) | 37 mi |
| 33 | Uncommon Solutions, Inc. | 56 | 5.0★ (9) | 16 mi |
| 34 | Coalfire | 56 | 5.0★ (4) | 16 mi |
| 35 | Falcon IT | 55 | 5.0★ (70) | 30 mi |
| 36 | TSI Colorado | IT Consulting and IT Support Company Colorado | 55 | 5.0★ (183) | 33 mi |
| 37 | Nuspire | 55 | 4.0★ (4) | 15 mi |
| 38 | Flexential - Denver - Englewood Data Center | 55 | 4.4★ (45) | 13 mi |
| 39 | Caspicom Computer Services | 55 | 4.9★ (79) | 16 mi |
| 40 | Like New PCs | 55 | 4.2★ (224) | 31 mi |
| 41 | COMPU10, LLC | 55 | 5.0★ (189) | 33 mi |
| 42 | Flexential - Denver - Aurora Data Center | 55 | 4.5★ (45) | 20 mi |
| 43 | VirtualArmour | 55 | 4.7★ (6) | 12 mi |
| 44 | Stepping Forward Technology | 55 | 5.0★ (153) | 33 mi |
| 45 | Complete Business Systems of Colorado | 55 | 4.8★ (188) | 31 mi |
| 46 | TeamLogic IT | 55 | 5.0★ (27) | 74 mi |
| 47 | Red Canary | 54 | 4.6★ (9) | 27 mi |
| 48 | Rule4, Inc. | 54 | 5.0★ (7) | 50 mi |
| 49 | Anchor Network Solutions, Inc. | 54 | 4.9★ (104) | 14 mi |
| 50 | Digital Beachhead | 54 | 5.0★ (9) | 33 mi |
Also serving Castle Rock
20 more cybersecurity companies within 75 mi that we can't rank yet: too few reviews, or a service we couldn't confirm. Listed A to Z.
| Business | Google rating | Distance |
|---|---|---|
| Bison Security Solutions | In Castle Rock | |
| BluTonk | 5.0★ (2) | 35 mi |
| Castle Rock Sky | In Castle Rock | |
| Clockwork Networks, LLC | 5.0★ (5) | In Castle Rock |
| Computer Concepts Inc. | 5.0★ (2) | 26 mi |
| Digital Microsystems Company dba IT SuperVision | In Castle Rock | |
| Digital Silence, Ltd. | 5.0★ (2) | 27 mi |
| Galileo Systems Group | 5.0★ (2) | 16 mi |
| Great Scott Consulting, LLC | 5.0★ (2) | In Castle Rock |
| Humorless Labs | In Castle Rock | |
| ITmPowered Consulting | 5.0★ (2) | 16 mi |
| Next Strategic Technologies, Inc. | 3.5★ (2) | 30 mi |
| Optimo AI | 5.0★ (2) | 30 mi |
| Quantum Vault Consulting | In Castle Rock | |
| Queldrex | In Castle Rock | |
| RangerTek | 3.0★ (2) | 34 mi |
| Summit Network Solutions LLC | 5.0★ (2) | 31 mi |
| Sunsoft Systems | 5.0★ (1) | In Castle Rock |
| Trace3 Gov | 5.0★ (2) | 27 mi |
| Zen Technology Solutions | 5.0★ (2) | 28 mi |
How we ranked Castle Rock cybersecurity companies
We scored 173 Castle Rock cybersecurity companies on nine factors, weighted as shown. An IT firm is ranked when its service is confirmed and it has 3 or more Google reviews or a claimed profile. An IT firm with no Google reviews scores zero on rating, review volume and recency. Other unknown factors are left out, not counted as zero. Scores last refreshed November 9, 2026.
Paid placement never changes a rank or score. Sponsored businesses are paid, labelled, limited to 3 and shown above the ranking, outside it.
| Factor | Weight | Computed from | In Castle Rock data |
|---|---|---|---|
| Reputation | 25% | Google star rating, adjusted for how many reviews back it | Measured |
| Review volume | 15% | Number of Google reviews, compared with the most-reviewed IT firm on the list | Measured |
| Recency | 10% | Share of reviews from the last 12 months | Not yet collected |
| Availability | 5% | Weekly open hours, Saturday, Sunday and 24/7 support | Measured |
| Service focus | 15% | How clearly the firm does this service (its Google category and name) | Measured |
| Proximity | 5% | Based in the city scores highest, less the farther away it is | Measured |
| Claimed profile | 10% | The firm has claimed its IT Firms Ranked profile (free or paid earn the same) | Measured |
| Partnered | 5% | The firm links to IT Firms Ranked from its own website with our badge, checked periodically | Measured |
| Client reviews | 10% | Verified client reviews collected by IT Firms Ranked: their rating and how many there are | Measured |
How to choose a cybersecurity company
- Ask whether monitoring is staffed around the clock by the firm itself or by a partner.
- Ask for a sample assessment or penetration-test report with client details removed.
- Check experience with your industry’s rules (for example HIPAA, PCI DSS or CMMC).
- Ask what the firm does in the first hour of an incident, and whether that is in the contract.
- Ask for two or three references from clients of your size and industry, and call them.
- Get the scope, response times and price in writing before you sign, including how you leave and get your data back.
Questions to ask a cybersecurity company
- Is your security monitoring staffed 24/7, and by whom?
- Which frameworks do you assess against?
- What do your reports include, and do you re-test after we fix the findings?
- Do you handle incident response yourselves, and do you work with cyber insurers?
- What access will you need to our systems, and how is it controlled and logged?
- Which certifications do the people doing the work hold?
Terms explained
- MSP (managed service provider)
- A firm that runs a business’s IT for a recurring fee: monitoring, patching, help desk, backups and security tools.
- Co-managed IT
- An arrangement where an outside firm supports an in-house IT person or team, sharing tools and tasks.
- Break-fix
- IT support paid per incident or per hour, with no monthly agreement.
- SLA (service-level agreement)
- The contract terms for response and resolution times, uptime and support hours.
- Help desk
- The support line staff call or email for IT problems.
- RMM
- Remote monitoring and management software that lets an IT firm watch, patch and fix computers remotely.
- vCIO
- A virtual chief information officer: part-time IT strategy and budgeting from an outside firm.
- MSSP
- A managed security service provider: a firm that monitors and manages security tools around the clock.
- EDR / MDR
- Endpoint detection and response software, and the managed service of people watching its alerts (managed detection and response).
- MFA
- Multi-factor authentication: a second proof of identity, such as an app prompt, on top of a password.
- Penetration test
- An authorised, simulated attack on your systems to find weaknesses before criminals do.
- SOC 2
- An independent auditor’s report (AICPA standard) on a service provider’s security controls.
Cybersecurity companies in Castle Rock: frequently asked questions
Who is the best cybersecurity company in Castle Rock?
By IFR Score, the highest-ranked cybersecurity company in Castle Rock, CO is GadellNet Consulting Services with an IFR Score of 62/100. It has 5.0★ from 79 Google reviews. CyTech International (#2) and Firma IT Solutions (#3) follow. We ranked 173 cybersecurity companies on nine factors, last updated November 9, 2026.
How many cybersecurity companies are there in Castle Rock?
ITFirmsRanked ranks 173 cybersecurity companies serving Castle Rock, CO. 2 of them are based in Castle Rock; the rest serve it from nearby towns. Another 20 within 75 mi are listed but not ranked yet. Counts are as of November 2026.
Which cybersecurity companies in Castle Rock work on weekends?
39 of 173 ranked cybersecurity companies post Saturday hours and 28 post Sunday hours. The highest-ranked open Saturdays are CyTech International (#2), Blackpoint Cyber (#6) and Colorado Computers (#8). Posted hours are office hours; many firms also run an after-hours support line for contract clients.
What Google rating do Castle Rock cybersecurity companies have?
The median Google rating among 173 rated cybersecurity companies in Castle Rock is 5.0★, with a median of 14 reviews. Colorado Computers has the most, 322 reviews, and ranks #8. We adjust ratings for review count, so a few five-star reviews cannot top the list.
How does ITFirmsRanked rank cybersecurity companies?
Each cybersecurity company gets a 0–100 IFR Score from nine published factors, led by reputation (25%), review volume (15%), service focus (15%) and recency (10%). An IT firm with no Google reviews scores zero on rating, review volume and recency; other factors we cannot measure are left out. Only IT firms with a confirmed service and 3 or more reviews, or a claimed profile, are ranked.
Do cybersecurity companies outside Castle Rock count in this ranking?
Yes, if they are within 75 mi of the Castle Rock city center, our service radius for cybersecurity companies. Each listing shows where the IT firm is based and how far away it is. Proximity is 5% of the IFR Score, so a nearby IT firm gets a small edge.
Can cybersecurity companies pay to rank higher on ITFirmsRanked?
No. The IFR Score never reads payment status, and this ranking has 0 paid placements. Up to 3 Featured IT firms may appear above the list, labelled Sponsored and showing their honest rank.
What does a cybersecurity company do?
Cybersecurity companies assess and protect a business’s systems and data: security monitoring, endpoint protection, penetration testing, compliance support and incident response.
How are cybersecurity companies in Castle Rock ranked?
By IFR Score: Google rating and review volume, recent reviews, opening hours, how clearly the firm does cybersecurity, distance, a claimed profile, our badge and verified client reviews. Sponsored placements never change the order.
Do we need a cybersecurity firm if we already have an IT provider?
Sometimes. Many IT providers include basic security tools; a security firm adds specialist work such as 24/7 monitoring, penetration tests, compliance audits and incident response. Ask your IT provider what they cover and where they would bring in a specialist.
What is the difference between a security assessment and a penetration test?
An assessment reviews your policies, settings and controls against a framework. A penetration test is an authorised, simulated attack that tries to exploit weaknesses. Both end with a written report and a list of fixes.
Can a cybersecurity firm help with compliance?
Many help organisations prepare for requirements such as HIPAA, PCI DSS, CMMC or SOC 2. They can advise and assess, but only an independent auditor issues a SOC 2 report, and compliance is ultimately your responsibility.
Update log for Castle Rock
- November 2026: IFR Scores recalculated for 173 cybersecurity companies serving Castle Rock.
- November 2026: 1 duplicate listing merged.
More cybersecurity companies and Castle Rock pages
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