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Best Cybersecurity Companies in Oshkosh, WI (2026)

64 cybersecurity companies ranked by IFR ScoreUpdated 0 paid placements in this rankingHow we rank →

The short answer

  1. 1

    Best overall in Oshkosh: All In Technology, IFR Score 58/100; 5.0★ from 30 Google reviews.

  2. 3

    Most-reviewed: Cyber Works, 181 Google reviews at 4.1★, the most of 64 ranked; ranked #3.

Rankings can't be bought. IT providers can't pay to change their rank or score. How we rank

64 Oshkosh cybersecurity companies are ranked here by IFR Score, from nine published factors. 14 open Saturdays and 8 open Sundays, based on posted hours. The median Google rating is 4.9★ across 64 rated IT firms.

Top 10 cybersecurity companies in Oshkosh at a glance

Ranked by IFR Score from public data. Sponsored placements are labelled and never change the order.

Top 10 cybersecurity companies in Oshkosh at a glance
RankBusinessIFR ScoreGoogle ratingBased inHoursBest for
1All In Technology585.0★ (30)Green Bay, 42 mi away—Overall
2Brew City PC585.0★ (46)Oconomowoc, 68 mi away——
3Cyber Works574.1★ (181)Green Bay, 40 mi awaySatMost reviews
4Randercom | IT Support & Business Phones | Appleton575.0★ (53)Appleton, 18 mi awaySat · Sun · Evenings—
5Randercom IT Support & Business Phones | Green Bay565.0★ (9)Allouez, 59 mi awaySat · Sun · Evenings—
6TeamLogic IT564.9★ (33)Madison, 72 mi away——
7AE Business Solutions554.7★ (28)Madison, 72 mi away——
8CyberTechs Consulting | Managed IT Services and Outsourced IT Support Company in Manitowoc554.9★ (55)Manitowoc, 44 mi away——
9M2 Technology | IT Solutions near Green Bay, WI555.0★ (46)Green Bay, 39 mi awaySat · Sun—
10SynerComm544.9★ (18)Brookfield, 68 mi away——

The 64 best cybersecurity companies in Oshkosh, 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.

  1. Ranked #1 in Oshkosh

    Based in Green Bay, 42 mi away

    58/100IFR Score

    Ranked #1 because of its Google rating and service focus: 5.0★ from 30 Google reviews, listed on Google as “Computer security service”.

    Based on 8 of 9 factors; recency not yet collected.

    • 5.0★ from 30 Google reviews
    Hours
    Mon–Fri 8 AM–5 PM · Sat–Sun closed
    Address
    2551 Continental Ct #1, Green Bay, WI 54311
  2. Based in Oconomowoc, 68 mi away

    58/100IFR Score

    Ranked #2 because of its Google rating and service focus: 5.0★ from 46 Google reviews, listed on Google as “Computer security service”.

    Based on 8 of 9 factors; recency not yet collected.

    • 5.0★ from 46 Google reviews
    Hours
    Mon–Fri 8 AM–5 PM · Sat–Sun closed
    Address
    612 N Sawyer Rd, Oconomowoc, WI 53066
  3. Based in Green Bay, 40 mi away

    57/100IFR Score

    Ranked #3 because of its Google rating and review volume: 4.1★ from 181 Google reviews, the most in Oshkosh.

    Based on 8 of 9 factors; recency not yet collected.

    • 4.1★ from 181 Google reviews
    Hours
    Mon 8 AM–6 PM · Tue 8 AM–5 PM · Wed 8 AM–6 PM · Thu–Fri 8 AM–5 PM · Sat 8 AM–12 PM · Sun closed
    Address
    844 Willard Dr #4, Green Bay, WI 54304
  4. Based in Madison, 72 mi away

    56/100IFR Score

    Ranked #6 because of its Google rating and service focus: 4.9★ from 33 Google reviews, listed on Google as “Computer security service”.

    Based on 8 of 9 factors; recency not yet collected.

    • 4.9★ from 33 Google reviews
    Hours
    Mon–Fri 8 AM–5 PM · Sat–Sun closed
    Address
    2801 Crossroads Dr Ste 1900, Madison, WI 53718
  5. Based in Madison, 72 mi away

    55/100IFR Score

    Ranked #7 because of its Google rating and service focus: 4.7★ from 28 Google reviews, listed on Google as “Computer security service”.

    Based on 8 of 9 factors; recency not yet collected.

    • 4.7★ from 28 Google reviews
    Hours
    Mon–Fri 8 AM–5 PM · Sat–Sun closed
    Address
    2323 Crossroads Dr Ste 300, Madison, WI 53718
  6. 55/100IFR Score

    Ranked #8 because of its Google rating and review volume: 4.9★ from 55 Google reviews.

    Based on 8 of 9 factors; recency not yet collected.

    • 4.9★ from 55 Google reviews
    Hours
    Mon–Thu 7 AM–5 PM · Fri 7 AM–4 PM · Sat–Sun closed
    Address
    100 Maritime Dr #1c, Manitowoc, WI 54220
  7. Based in Brookfield, 68 mi away

    54/100IFR Score

    Ranked #10 because of its Google rating and service focus: 4.9★ from 18 Google reviews, listed on Google as “Computer security service”.

    Based on 8 of 9 factors; recency not yet collected.

    • 4.9★ from 18 Google reviews
    Hours
    Mon–Fri 8 AM–5 PM · Sat–Sun closed
    Address
    3265 Gateway Rd #650, Brookfield, WI 53045
  8. Based in Sussex, 65 mi away

    53/100IFR Score

    Ranked #11 because of its Google rating and review volume: 5.0★ from 73 Google reviews.

    Based on 8 of 9 factors; recency not yet collected.

    • 5.0★ from 73 Google reviews
    Hours
    Mon–Fri 8 AM–5 PM · Sat 9 AM–1 PM · Sun closed
    Address
    W242N5656 Peppertree Dr W, Sussex, WI 53089
  9. Based in Stevens Point, 62 mi away

    52/100IFR Score

    Ranked #12 because of its Google rating and service focus: 4.2★ from 10 Google reviews, listed on Google as “Computer security service”.

    Based on 8 of 9 factors; recency not yet collected.

    • 4.2★ from 10 Google reviews
    Hours
    Mon–Fri 8 AM–5 PM · Sat–Sun closed
    Address
    1300 College Ct, Stevens Point, WI 54481
  10. Based in Green Bay, 40 mi away

    52/100IFR Score

    Ranked #13 because of its Google rating and review volume: 5.0★ from 60 Google reviews.

    Based on 8 of 9 factors; recency not yet collected.

    • 5.0★ from 60 Google reviews
    Hours
    Mon–Fri 8:30 AM–5 PM · Sat–Sun closed
    Address
    2563 Development Dr, Green Bay, WI 54311
  11. Based in Plover, 58 mi away

    52/100IFR Score

    Ranked #14 because of its Google rating and review volume: 4.7★ from 104 Google reviews.

    Based on 8 of 9 factors; recency not yet collected.

    • 4.7★ from 104 Google reviews
    Hours
    Mon–Fri 9 AM–5 PM · Sat–Sun closed
    Address
    1511 Hoover Ave S, Plover, WI 54467
  12. #16 ICS

    Based in Waukesha, 72 mi away

    51/100IFR Score

    Ranked #16 because of its Google rating and service focus: 5.0★ from 7 Google reviews, listed on Google as “Computer security service”.

    Based on 8 of 9 factors; recency not yet collected.

    • 5.0★ from 7 Google reviews
    Hours
    Mon–Fri 8:30 AM–5:30 PM · Sat–Sun closed
    Address
    227 South St, Waukesha, WI 53186
  13. Based in Green Bay, 42 mi away

    51/100IFR Score

    Ranked #17 because of its Google rating and review volume: 5.0★ from 44 Google reviews.

    Based on 8 of 9 factors; recency not yet collected.

    • 5.0★ from 44 Google reviews
    Hours
    Mon–Fri 9 AM–5 PM · Sat–Sun closed
    Address
    108 Packerland Dr Ste d, Green Bay, WI 54303
  14. Based in Wauwatosa, 72 mi away

    51/100IFR Score

    Ranked #18 because of its Google rating and service focus: 4.0★ from 4 Google reviews, listed on Google as “Computer security service”.

    Based on 7 of 9 factors; recency and availability not yet collected.

    • 4.0★ from 4 Google reviews
    Address
    W Innovation Dr Ste 100, Wauwatosa, WI 53226
  15. Based in Oconomowoc, 68 mi away

    51/100IFR Score

    Ranked #19 because of its Google rating and review volume: 4.8★ from 21 Google reviews.

    Based on 8 of 9 factors; recency not yet collected.

    • 4.8★ from 21 Google reviews
    Hours
    Mon–Sun 12 AM–12 AM
    Address
    N27W23921 Paul Rd Ste G, Pewaukee, WI 53072
  16. Based in Stevens Point, 62 mi away

    51/100IFR Score

    Ranked #20 because of its Google rating and service focus: 3.3★ from 7 Google reviews, listed on Google as “Computer security service”.

    Based on 8 of 9 factors; recency not yet collected.

    • 3.3★ from 7 Google reviews
    Hours
    Mon–Fri 8 AM–5 PM · Sat–Sun closed
    Address
    1043 Union St, Stevens Point, WI 54481
  17. Based in Wauwatosa, 72 mi away

    50/100IFR Score

    Ranked #21 because of its Google rating and review volume: 4.9★ from 73 Google reviews.

    Based on 8 of 9 factors; recency not yet collected.

    • 4.9★ from 73 Google reviews
    Hours
    Mon–Fri 7 AM–6 PM · Sat–Sun closed
    Address
    10437 W Innovation Dr, Wauwatosa, WI 53226
  18. Based in Green Bay, 41 mi away

    50/100IFR Score

    Ranked #22 because of its Google rating and review volume: 5.0★ from 37 Google reviews.

    Based on 8 of 9 factors; recency not yet collected.

    • 5.0★ from 37 Google reviews
    Hours
    Mon–Fri 8 AM–5 PM · Sat–Sun closed
    Address
    2701 Larsen Road Ste BA223-TLIT, Green Bay, WI 54303
  19. Based in West Bend, 46 mi away

    50/100IFR Score

    Ranked #23 because of its Google rating and review volume: 5.0★ from 41 Google reviews.

    Based on 8 of 9 factors; recency not yet collected.

    • 5.0★ from 41 Google reviews
    Hours
    Mon–Thu 9 AM–5 PM · Fri 7 AM–3 PM · Sat–Sun closed
    Address
    419 S Main St, West Bend, WI 53095
  20. 50/100IFR Score

    Ranked #25 because of its Google rating and review volume: 4.4★ from 151 Google reviews.

    Based on 8 of 9 factors; recency not yet collected.

    • 4.4★ from 151 Google reviews
    Hours
    Mon 10 AM–4 PM · Tue–Fri 10 AM–5 PM · Sat–Sun closed
    Address
    5710 W Vliet St, Milwaukee, WI 53208

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 64 ranked cybersecurity companies here; the rest are on their profiles.

cybersecurity companies in Oshkosh, ranks 26 to 50
RankBusinessIFR ScoreGoogle ratingDistance
26Lisbon Creek Systems, LLC504.9★ (63)64 mi
27ZTechSystems505.0★ (13)21 mi
28River Run504.8★ (67)69 mi
29Amplitel Technologies | IT Support Company and Managed IT Services in Wisconsin505.0★ (20)22 mi
30Redbird Security495.0★ (44)62 mi
31Risetech Partners494.2★ (5)74 mi
32Ontech Systems, Inc.495.0★ (40)65 mi
33Total Computing Solutions494.4★ (31)37 mi
34TeamLogic IT494.8★ (38)59 mi
35ClearCom, Inc.495.0★ (3)72 mi
36Maxx Memory494.8★ (20)55 mi
37Foxgate Technology Group494.2★ (19)19 mi
38PC Systems Around You, LLC484.7★ (13)42 mi
393Fold IT485.0★ (32)70 mi
40UES Technologies485.0★ (11)18 mi
41CGuilbert Technologies LLC485.0★ (22)75 mi
42I.T. Connect484.9★ (36)72 mi
43The Office Technology Group474.8★ (33)74 mi
44GoTech IT Solutions Wisconsin475.0★ (28)71 mi
45AdvaTech Security474.9★ (29)74 mi
46Potter PC Solutions475.0★ (4)13 mi
47Gordon Flesch Company474.7★ (34)75 mi
48Live Wire Communication473.7★ (6)In Oshkosh
49Micro-Tech USA464.8★ (6)75 mi
50SWICKtech464.9★ (9)74 mi

Also serving Oshkosh

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.

Unranked cybersecurity companies serving Oshkosh
BusinessGoogle ratingDistance
Actinion5.0★ (1)65 mi
CMIT Solutions of Northeast Wisconsin5.0★ (1)41 mi
CSM5.0★ (1)22 mi
Cyber Savvy5.0★ (1)49 mi
DataMax IT Services2.0★ (1)46 mi
Everyday TechnologyIn Oshkosh
Everyday Technology, LLC5.0★ (1)In Oshkosh
Fautore LLC5.0★ (1)39 mi
GDC IT Solutions5.0★ (2)24 mi
Hello Security LLC5.0★ (2)45 mi
Konica Minolta Business Solutions1.0★ (1)69 mi
Legal Evidence Corp5.0★ (1)72 mi
Link Computing Solutions4.8★ (92)In Oshkosh
Lucas Technical Services LLC5.0★ (2)63 mi
M&K Enterprises3.0★ (2)22 mi
Milwaukee IT Group5.0★ (1)73 mi
New Era Technology3.5★ (2)21 mi
Sinnard Technologies - Mobile Apps, Websites & Custom Software5.0★ (7)In Oshkosh
Smart Computing5.0★ (1)17 mi
SpectrumIT, Inc.1.0★ (1)55 mi

How we ranked Oshkosh cybersecurity companies

We scored 64 Oshkosh 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.

Read the full method: formula, sources and exclusions

IFR Score factors and weights
FactorWeightComputed fromIn Oshkosh data
Reputation25%Google star rating, adjusted for how many reviews back itMeasured
Review volume15%Number of Google reviews, compared with the most-reviewed IT firm on the listMeasured
Recency10%Share of reviews from the last 12 monthsNot yet collected
Availability5%Weekly open hours, Saturday, Sunday and 24/7 supportMeasured
Service focus15%How clearly the firm does this service (its Google category and name)Measured
Proximity5%Based in the city scores highest, less the farther away it isMeasured
Claimed profile10%The firm has claimed its IT Firms Ranked profile (free or paid earn the same)Measured
Partnered5%The firm links to IT Firms Ranked from its own website with our badge, checked periodicallyMeasured
Client reviews10%Verified client reviews collected by IT Firms Ranked: their rating and how many there areMeasured

How to choose a cybersecurity company

  1. Ask whether monitoring is staffed around the clock by the firm itself or by a partner.
  2. Ask for a sample assessment or penetration-test report with client details removed.
  3. Check experience with your industry’s rules (for example HIPAA, PCI DSS or CMMC).
  4. Ask what the firm does in the first hour of an incident, and whether that is in the contract.
  5. Ask for two or three references from clients of your size and industry, and call them.
  6. 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 Oshkosh: frequently asked questions

Who is the best cybersecurity company in Oshkosh?

By IFR Score, the highest-ranked cybersecurity company in Oshkosh, WI is All In Technology with an IFR Score of 58/100. It has 5.0★ from 30 Google reviews. Brew City PC (#2) and Cyber Works (#3) follow. We ranked 64 cybersecurity companies on nine factors, last updated November 9, 2026.

How many cybersecurity companies are there in Oshkosh?

ITFirmsRanked ranks 64 cybersecurity companies serving Oshkosh, WI. 1 of them is based in Oshkosh; 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 Oshkosh work on weekends?

14 of 64 ranked cybersecurity companies post Saturday hours and 8 post Sunday hours. The highest-ranked open Saturdays are Cyber Works (#3), Randercom | IT Support & Business Phones | Appleton (#4) and Randercom IT Support & Business Phones | Green Bay (#5). Posted hours are office hours; many firms also run an after-hours support line for contract clients.

What Google rating do Oshkosh cybersecurity companies have?

The median Google rating among 64 rated cybersecurity companies in Oshkosh is 4.9★, with a median of 24 reviews. Cyber Works has the most, 181 reviews, and ranks #3. 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 Oshkosh count in this ranking?

Yes, if they are within 75 mi of the Oshkosh 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 Oshkosh 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 Oshkosh

  1. November 2026: IFR Scores recalculated for 64 cybersecurity companies serving Oshkosh.