Ranked #1 in Jefferson City
Based in Washington, 63 mi away
57/100IFR Score
Ranked #1 because of its Google rating and review volume: 4.9★ from 78 Google reviews.
Based on 8 of 9 factors; recency not yet collected.
Best Cybersecurity Companies in Jefferson City, MO (2026)
15 cybersecurity companies ranked by IFR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Jefferson City: NOC Technology | Managed IT Support for St. Louis, IFR Score 57/100; 4.9★ from 78 Google reviews; open 7 days a week.
- 5
Most-reviewed: Onsite Computer Consulting - Computer Paramedic, 111 Google reviews at 4.9★, the most of 15 ranked; ranked #5.
Rankings can't be bought. IT providers can't pay to change their rank or score. How we rank
15 Jefferson City cybersecurity companies are ranked here by IFR Score, from nine published factors. 5 open Saturdays and 5 open Sundays, based on posted hours. The median Google rating is 5.0★ across 15 rated IT firms.
Top 10 cybersecurity companies in Jefferson City 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 | NOC Technology | Managed IT Support for St. Louis | 57 | 4.9★ (78) | Washington, 63 mi away | Sat · Sun · Evenings | Overall |
| 2 | The Tech Shop | 57 | 4.9★ (69) | Columbia, 25 mi away | — | — |
| 3 | The 20 MSP | 57 | 5.0★ (31) | Columbia, 28 mi away | Sat · Sun · Evenings | — |
| 4 | Stimulus Technologies | Managed IT Services & IT Support Jefferson City | 56 | 4.9★ (52) | Jefferson City | — | — |
| 5 | Onsite Computer Consulting - Computer Paramedic | 53 | 4.9★ (111) | Wentzville, 73 mi away | — | Most reviews |
| 6 | Personalized Computers | 53 | 4.6★ (49) | Columbia, 27 mi away | — | — |
| 7 | W-Logic LLC | 53 | 5.0★ (3) | Columbia, 34 mi away | — | — |
| 8 | STR Technologies | 52 | 5.0★ (54) | Union, 64 mi away | — | — |
| 9 | Onsite Computer Consulting | 51 | 5.0★ (5) | Columbia, 29 mi away | Sat · Sun · Evenings | — |
| 10 | C&M Computing | 51 | 5.0★ (31) | Fort Leonard Wood, 50 mi away | — | — |
The 15 best cybersecurity companies in Jefferson City, 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.
Based in Columbia, 25 mi away
57/100IFR ScoreRanked #2 because of its Google rating and review volume: 4.9★ from 69 Google reviews.
Based on 7 of 9 factors; recency and availability not yet collected.
#3 The 20 MSP
Based in Columbia, 28 mi away
57/100IFR ScoreRanked #3 because of its Google rating and review volume: 5.0★ from 31 Google reviews.
Based on 8 of 9 factors; recency not yet collected.
Based in Jefferson City
56/100IFR ScoreRanked #4 because of its Google rating and review volume: 4.9★ from 52 Google reviews.
Based on 8 of 9 factors; recency not yet collected.
Based in Wentzville, 73 mi away
53/100IFR ScoreRanked #5 because of its Google rating and review volume: 4.9★ from 111 Google reviews, the most in Jefferson City.
Based on 8 of 9 factors; recency not yet collected.
Based in Columbia, 27 mi away
53/100IFR ScoreRanked #6 because of its Google rating and review volume: 4.6★ from 49 Google reviews.
Based on 8 of 9 factors; recency not yet collected.
#7 W-Logic LLC
Based in Columbia, 34 mi away
53/100IFR ScoreRanked #7 because of its Google rating and service focus: 5.0★ from 3 Google reviews, listed on Google as “Computer security service”.
Based on 8 of 9 factors; recency not yet collected.
Based in Union, 64 mi away
52/100IFR ScoreRanked #8 because of its Google rating and review volume: 5.0★ from 54 Google reviews.
Based on 8 of 9 factors; recency not yet collected.
Based in Columbia, 29 mi away
51/100IFR ScoreRanked #9 because of its Google rating and service focus: 5.0★ from 5 Google reviews, listed on Google as “Computer service”.
Based on 8 of 9 factors; recency not yet collected.
#10 C&M Computing
Based in Fort Leonard Wood, 50 mi away
51/100IFR ScoreRanked #10 because of its Google rating and review volume: 5.0★ from 31 Google reviews.
Based on 8 of 9 factors; recency not yet collected.
Based in Columbia, 26 mi away
48/100IFR ScoreRanked #11 because of its Google rating and service focus: 5.0★ from 9 Google reviews, listed on Google as “Computer consultant”.
Based on 8 of 9 factors; recency not yet collected.
#12 JIL Technology
Based in Union, 70 mi away
48/100IFR ScoreRanked #12 because of its Google rating and service focus: 5.0★ from 6 Google reviews, listed on Google as “Computer support and services”.
Based on 8 of 9 factors; recency not yet collected.
Based in Edwardsville, 63 mi away
46/100IFR ScoreRanked #13 because of its Google rating and service focus: 5.0★ from 4 Google reviews, listed on Google as “Computer repair service”.
Based on 8 of 9 factors; recency not yet collected.
Based in Rolla, 24 mi away
46/100IFR ScoreRanked #14 because of its Google rating and service focus: 5.0★ from 4 Google reviews, listed on Google as “Telecommunications equipment supplier”.
Based on 8 of 9 factors; recency not yet collected.
Based in Sedalia, 60 mi away
44/100IFR ScoreRanked #15 because of its Google rating and service focus: 4.1★ from 7 Google reviews, listed on Google as “Computer repair service”.
Based on 8 of 9 factors; recency not yet collected.
Also serving Jefferson City
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 |
|---|---|---|
| AHAB Engineering LLC | 5.0★ (2) | In Jefferson City |
| Bytetails LLC | In Jefferson City | |
| Computer Service Professionals | 5.0★ (1) | In Jefferson City |
| Data Recovery & Defense, LLC | 1.0★ (1) | 39 mi |
| DCS Technologies | In Jefferson City | |
| Elite Technology Solutions Group | 5.0★ (3) | In Jefferson City |
| Fired Synapse Technologies | 48 mi | |
| GB Network Assurance LLC | 63 mi | |
| Infinity Networks | In Jefferson City | |
| IronVault IT Solutions | 31 mi | |
| JS Computek | 28 mi | |
| Lunar IT LLC | 5.0★ (1) | In Jefferson City |
| Marco Technologies | 4.8★ (9) | In Jefferson City |
| Mid MO Telecom & Security, LLC | 5.0★ (4) | In Jefferson City |
| Modern Technologies | 4.8★ (101) | In Jefferson City |
| Phoenix Geeks, LLC | 5.0★ (2) | 35 mi |
| TCS - Computer Repair | 5.0★ (7) | In Jefferson City |
| Top Priority Managed Services | 5.0★ (1) | 21 mi |
| Towner Communications Systems, Inc | 4.9★ (13) | In Jefferson City |
| Turn-Key Mobile, Inc. | 4.6★ (11) | In Jefferson City |
How we ranked Jefferson City cybersecurity companies
We scored 15 Jefferson City 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 Jefferson City 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 Jefferson City: frequently asked questions
Who is the best cybersecurity company in Jefferson City?
By IFR Score, the highest-ranked cybersecurity company in Jefferson City, MO is NOC Technology | Managed IT Support for St. Louis with an IFR Score of 57/100. It has 4.9★ from 78 Google reviews. It is open 7 days a week. The Tech Shop (#2) and The 20 MSP (#3) follow. We ranked 15 cybersecurity companies on nine factors, last updated November 9, 2026.
How many cybersecurity companies are there in Jefferson City?
ITFirmsRanked ranks 15 cybersecurity companies serving Jefferson City, MO. 1 of them is based in Jefferson City; 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 Jefferson City work on weekends?
5 of 15 ranked cybersecurity companies post Saturday hours and 5 post Sunday hours. The highest-ranked open Saturdays are NOC Technology | Managed IT Support for St. Louis (#1), The 20 MSP (#3) and Onsite Computer Consulting (#9). Posted hours are office hours; many firms also run an after-hours support line for contract clients.
What Google rating do Jefferson City cybersecurity companies have?
The median Google rating among 15 rated cybersecurity companies in Jefferson City is 5.0★, with a median of 31 reviews. Onsite Computer Consulting - Computer Paramedic has the most, 111 reviews, and ranks #5. 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 Jefferson City count in this ranking?
Yes, if they are within 75 mi of the Jefferson City 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 Jefferson City 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 Jefferson City
- November 2026: IFR Scores recalculated for 15 cybersecurity companies serving Jefferson City.